Pokemon Legends Z-A Mega Evolution Guide: Unlocks and Mega Stones

Mega Evolution is the whole point of a trip back to Lumiose City, and this time the game is built around it. Wild Pokemon are stuck in mega form and tearing up the streets, you get the power to fight fire with fire partway through the story, and then the hunt for stones takes over your life. The system works pretty differently from the old X and Y days, though. It runs on a gauge, it's timed, and half the stones aren't in any shop. Here's the full loop: when the unlock actually happens, where every kind of stone comes from, and how to get real value out of your transformed minutes.

Unlocking Mega Evolution

You don't start with it. The first chunk of the game is regular battles only, and Mega Evolution shows up as a story beat rather than something you go find.

The unlock lands during Main Mission 9, "Chase That Mysterious Pokémon!". You end up chasing Zygarde through the city until you bump into your first Rogue Mega, which is a wild Pokemon stuck in its mega form with nobody controlling it. Right before that fight, you get handed a Key Stone so you can mega evolve something of your own and the matchup isn't completely silly. Beat the Rogue Mega, calm it down, and the Key Stone is yours for keeps.

Your starter's stone comes right after

A Key Stone alone does nothing, so the game doesn't leave you hanging. Right around Main Mission 10, AZ hands you the Mega Stone that matches your first partner: Meganiumite if you picked Chikorita, Emboarite for Tepig, Feraligite for Totodile. So by roughly a third of the way through the story you've got the full kit, and your partner's new form is a real one. Mega Meganium turns Grass/Fairy, Mega Emboar stays Fire/Fighting, and Mega Feraligatr comes out Water/Dragon.

The stone has to be held, not carried

This is the gotcha that catches almost everyone. A Mega Stone sitting in your bag does nothing. Stones only work as held items, and you can't hand a Pokemon an item mid-battle, so a stone you forgot to equip is a stone you're not using today.

The fix is quick. Open the menu, go into your Satchel, scroll over to the Mega Stones tab, pick the stone, hit Give to Pokémon, and choose whoever it belongs to (they need to be in your party). Get in the habit of doing this the second any stone lands in your bag, because the game will happily let you walk into a boss fight with a useless pocket full of rocks.

Finding Mega Stones

The base game has 60-plus stones to chase, the December 2025 Mega Dimension DLC adds another pile, and they come from a bunch of different places. No single shop carries them all, so it helps to know the six buckets everything falls into.

Beat Rogue Mega Pokémon

Sixteen scripted Rogue Mega fights are spread through the story: Absol, Slowbro, Camerupt, Victreebel, Beedrill, Hawlucha, Banette, Mawile, Barbaracle, Ampharos, Froslass, Altaria, Venusaur, Dragonite, Tyranitar, and Starmie. They pop up in the districts as the plot moves along, like the Rogue Mega Absol fight over in Vert District.

Think of these like the Noble battles from Legends: Arceus. You can't catch them. Win, and the reward is that Pokemon's Mega Stone, which is how a lot of the mid-game stones (Venusaurite, Tyranitarite, Froslassite, Dragoninite) end up in your hands for free.

Buy them at the Stone Emporium

The Stone Emporium on Vernal Avenue in Southern Lumiose sells stones for plain cash. It's not cheap, but story payouts keep up if you're not hoarding. Stock starts small after Mission 10 and grows as you clear more main missions, so check back every few story beats.

| Stones | Price | | --- | --- | | Gengarite, Medichamite, Abomasite, Scizorite | 50,000 | | Garchompite, Steelixite, Kangaskhanite | 70,000 | | Charizardite X, Charizardite Y, Blastoisinite | 100,000 |

The two starter stones you didn't get from AZ also show up here later for 100,000 each, which is the only way to grab the megas your rivals walked off with.

Trade Mega Shards at Quasartico

The other shop is the Mega Shard Exchange at Quasartico Inc. headquarters, and it takes shards instead of cash. You get Mega Shards by smashing the pink Mega Crystals clustered around Lumiose City with your Pokemon, so honestly, just break every crystal you walk past. It adds up fast.

Shard prices come in three tiers: 180, 240, and 360 per stone. The 180 tier covers Pidgeotite, Manectite, Houndoominite, Audinite, Lopunnite, Sablenite, and Sharpedonite. The 240 tier is the big one, with Gyaradosite, Lucarionite, Gardevoirite, Galladite, Heracronite, Aerodactylite, Falinksite, Glalitite, and friends. The 360 tier is the premium stuff: Alakazite, Aggronite, Salamencite, Metagrossite, Chandelurite, Excadrite, and Drampite. Like the Emporium, the selection expands after later missions, with new tiers unlocking around missions 15, 19 to 20, 24 to 25, 30 to 31, and 35.

Side missions, ranked seasons, and gifts

A handful of stones only come from specific side missions. Raichunite X and Y both come from Side Mission 139 (The Dauntless Raichu Duo), Crabominite from Side Mission 141, Latiasite and Latiosite together from Side Mission 189 (Siblings of the Sky), and Magearnite from Side Mission 195.

The Kalos starter megas are ranked rewards in the Z-A Battle Club ladder: Greninjite was the Season 1 prize, Delphoxite Season 2, Chesnaughtite Season 3. The Hoenn trio (Sceptilite, Blazikenite, Swampertite) and Baxcalibrite also come through ranked play. If you never touch online, those stones just don't exist for you, which is kind of a pain but worth knowing up front. Mewtwonite X, Mewtwonite Y, and Diancite have been handed out through Mystery Gift distributions instead.

Late story, postgame, and the DLC

A few big ones sit at the end. Zygardite arrives during Main Mission 37 and lets Zygarde Complete Forme go mega, which matters more than it sounds (more on that below). Floettite is the last one most players ever see: finish 15 battles in the postgame Infinite Z-A Royale and you get AZ's Eternal Flower Floette along with its stone.

The Mega Dimension DLC ($29.99, released December 10, 2025) adds the Hyperspace Lumiose area and its own stone list. Some come from fixed arena fights, like Heatran in the Hyperspace Infernal Arena, Darkrai in the Newmoon Nightmare, Absol Z in the Disaster Arena, and Meowstic in the Second-Sight Arena. Others drop from Rogue Megas that show up as random encounters in the Hyperspace wild zones, like Golurk, Golisopod, Glimmora, Chimecho, and Scovillain. The DLC also introduces the Z stones (Absolite Z, Lucarionite Z, Garchompite Z), with Garchompite Z tied to limited-time event distributions.

One rule covers all of it: you only get one copy of each stone per save file. They can't be traded away, and you can't receive one by trading a Pokemon that's holding it, so there's no shortcut through multiplayer.

Building Around Mega Forms

Building for megas in Z-A is not like building for them in X and Y, and the reason is bigger than the new forms.

Abilities don't exist here

Z-A drops abilities entirely. Some Pokemon have built-in passive effects that fill a similar role, but you don't pick abilities, and the classic mega abilities people remember (Shadow Tag Gengar, Adaptability Lucario, Aerilate Salamence) aren't part of the math. So the old question "which mega has the best ability?" is dead. What's left is stats, typing, and movepool, which honestly makes picking simpler.

Type flips change your matchups

Several megas change type, and that shifts who wins the trade. Mega Feraligatr goes from pure Water to Water/Dragon, so the Grass and Electric hits that used to scare it stop mattering much. Mega Meganium picks up Fairy to go Grass/Fairy. Mega Barbaracle swaps its Water half for Fighting, going Rock/Fighting with a whole different set of weaknesses and a Fighting attack stat to abuse. Mega Clefable adds Flying. Check the new typing before you send a mega into a matchup you've played a hundred times, because the old answers might not apply anymore.

Stat lines worth building around

Just under 50 brand new forms shipped across the base game and DLC, and a few stat spreads stand way out:

| Mega form | Standout stats | The pitch | | --- | --- | --- | | Mega Chandelure | 175 Sp. Atk | Nukes things from a screen away | | Mega Baxcalibur | 175 Atk, 115 HP | Huge hitter that doesn't fold | | Mega Zygarde | 216 HP, 216 Sp. Def | Absurdly hard to kill | | Mega Feraligatr | 160 Atk, 125 Def | Fast clears on Rogue Megas | | Mega Greninja | 142 Speed | Usually moves first, period | | Mega Golisopod (DLC) | 150 Atk, 175 Def | Sledgehammer that tanks |

Mega Zygarde from Mission 37 deserves a special shout. That 216 HP is the highest health pool of any mega in the game, and it's a free story reward, so late-game it becomes the default "stand there and win the war of attrition" button.

Master your moves before you transform

While a Pokemon is mega evolved, every move it uses becomes a Plus Move with bonus damage on top. That only pays off if the moves are actually mastered. Level-up moves master themselves naturally, usually 5 to 10 levels after your Pokemon first learns them. TM moves never master on their own; you have to bring a Seed of Mastery to Josée at the Justice Dojo and have her teach it. Alpha Pokemon come with their moves already mastered, which is a quiet reason to grab them when you see them.

A mega with unmastered moves is a stat stick. A mega with four mastered moves is a delete button. Do the dojo legwork first.

Shape the team around one window

Only one of your Pokemon can be transformed at a time, so a team doesn't need six stone-holders. Pick one carry, make sure its four moves are mastered, and build the rest of the party to handle the types your mega hates fighting. Carrying a second stone-holder for long fights is fine, since you can fire off a second mega window after the first one ends. Past two, you're wasting held-item slots that could hold something useful.

Using Mega Evolution in Battles

The transformation runs on the Mega Gauge, that bar in the bottom-right corner that appears whenever your active Pokemon is holding its stone. Every fight starts with it empty.

Filling the gauge

Two things fill it: landing your own moves, and grabbing the glowing orbs the game drops on the field. In regular trainer and wild battles, attacking does most of the work. In Rogue Mega fights, orbs get scattered everywhere, and scooping them up is the fast lane. Once the bar is full, press the right stick down and your Pokemon transforms on the spot.

The clock is always running

Here's the big change from X and Y: mega form is timed. The moment you transform, the gauge starts draining, and when it hits empty your Pokemon drops back to normal. The window is short, well under a minute in most fights, but grabbing more orbs mid-form tops the gauge back up and stretches your ride.

The flip side is that the old "one mega per battle" rule is gone. When the form ends you can refill and go again, or build charge on a second stone-holder and transform them later in the same fight. It's a resource you spend and rebuild now, not a once-per-battle firework.

One at a time, and don't swap mid-form

You can never have two megas active at once. And there's a wrinkle: if you return a Pokemon to its ball while it's still transformed, the one you send out can't mega evolve. As a rule, let the gauge run out or let the transformed one faint before you rotate, otherwise you've locked yourself out of the mechanic for that exchange.

Plus Moves and the gauge economy

Plus Moves are the layer on top, and the gauge pays for them too. Any mastered move can be fired as a Plus Move, which hits roughly 20 to 30 percent harder (the bigger bump lands on super effective hits) or, for status moves, gets a bigger or longer effect. Each Plus Move you use burns one segment of the gauge, and that cost applies even when you're not transformed. Protect and Detect don't fully block a Plus Move either, so there's no hiding from one.

That cost creates a real decision every fight. Spend gauge segments on Plus Moves now for steady damage, or hold the bar full, transform, and enjoy every move coming out as a boosted Plus Move for free while transformed? Against tough bosses, saving it almost always wins.

One more thing that explains a lot of "why is this fight taking forever" moments: regular, non-Plus moves deal about 70 percent less damage to Rogue Mega Pokemon. The game is quietly telling you the gauge is the whole fight. Bring mastered moves, fill the bar, transform, or chip away forever.

The Rogue Mega game plan

Rogue Megas start already transformed, hit hard, and throw big area attacks. The pattern that works: spend the opening dodging and learning their attack rhythm, scoop orbs the whole time, then transform the moment your bar fills and swing a type advantage into them. Filling the gauge is usually faster than trying to out-slug one in base form, since your un-transformed damage is taking that 70 percent haircut anyway.

Common Unlock Mistakes

Most early frustration with the system traces back to a handful of fixable errors.

Leaving the stone in the bag. The number one cause of "why won't my Pokemon mega evolve". Stones work as held items only, and the give-item step lives in the Satchel's Mega Stones tab. Equip every stone the moment you get it.

Trying to double up. Two megas at once isn't a thing. Worse, swapping out a Pokemon that's still transformed blocks the replacement from transforming, so rotate after the gauge empties, not before.

Ignoring the pink crystals. Mega Shards are the currency for the biggest stone shop in the game, and they're just sitting around town. Players who never break crystals end up cash-rich and shard-poor, staring at a 360-shard Metagrossite they can't afford.

Spending the whole gauge before transforming. Plus Moves eat gauge segments even in base form. Fire them carelessly and the bar never fills, so you end up fighting the boss's mega form with your plain Pokemon. Land normal hits to build charge, save the segments for the transformed window.

Bringing unmastered moves to a Rogue Mega. That 70 percent damage cut applies to anything that isn't a Plus Move. An unmastered team does scratch damage for ten minutes. Master your moves, or grab an Alpha Pokemon that comes pre-mastered.

Expecting to buy or trade for everything. The Kalos starter stones, the Hoenn starter trio, and Baxcalibrite only come through ranked Battle Club seasons. Floettite needs 15 Infinite Z-A Royale wins. Nothing can be traded in from another player, and each save gets exactly one of each stone. If a stone isn't in either shop, there's a specific task attached to it, full stop.

Never re-checking the shops. Both the Stone Emporium and the Quasartico exchange add stock after story missions 10, 15, 20, 25, 30, and 35. Plenty of players buy the day-one selection and never look again, missing that Aggronite or Salamencite unlocked three chapters ago.

Cheapest early goal: smash crystals for a while after Mission 10, cash 180 shards in for Pidgeotite or Houndoominite, and put the rest toward whichever 240 or 360 stone your team actually wants. Then just play the story, because Mission 37 hands you Zygardite, and a 216 HP mega tank for free is the best deal in the game.