Stats, type matchups, abilities, learnset, current usage, and build context for Mega Raichu Y in Pokemon Champions.

Psychic - status
Raises the user's Speed by 2.
Fairy - special / 80 BP / 100%
100% confuse target that had a stat rise this turn.
Normal - physical / 85 BP / 100%
30% chance to paralyze the target.
Fighting - physical / 75 BP / 100%
Destroys screens, unless the target is immune.
Dark - physical / 60 BP / 100%
No additional effect. Hits adjacent Pokemon.
Psychic - status
Raises the user's Sp. Atk and Sp. Def by 1.
Electric - status
+1 SpD, user's next Electric move 2x power.
Electric - special / 50 BP / 90%
70% chance to raise the user's Sp. Atk by 1.
Fairy - status / 100%
Lowers the target's Attack by 2.
Fairy - special / 80 BP / 100%
No additional effect. Hits adjacent foes.
Ground - physical / 80 BP / 100%
Digs underground turn 1, strikes turn 2.
Electric - special / 80 BP / 100%
30% chance to paralyze adjacent Pokemon.
Normal - status
Raises the user's evasiveness by 1.
Fighting - physical / 75 BP / 100%
User recovers 50% of the damage dealt.
Fairy - special / 50 BP / 100%
User recovers 75% of the damage dealt.
Electric - status / 100%
Lowers the target's Sp. Atk by 2.
Electric - status
5 turns. Grounded: +Electric power, can't sleep.
Electric - special / 40-150 BP / 100%
More power the faster the user is than the target.
Electric - special / 55 BP / 95%
100% chance to lower the foe(s) Speed by 1.
Normal - status / 100%
Target repeats its last move for its next 3 turns.
Normal - physical / 100%
Lowers the target's HP to the user's HP.
Normal - status / Priority +4
User survives attacks this turn with at least 1 HP.
Psychic - special / 80-120 BP / 100%
User on Psychic Terrain: 1.5x power, hits foes.
Normal - physical / 70-140 BP / 100%
Power doubles if user is burn/poison/paralyzed.
Normal - physical / 40 BP / 100% / Priority +3
Hits first. First turn out only. 100% flinch chance.
Dark - status / 100%
Lowers the target's Sp. Def by 2.
Normal - physical / 30 BP / 100% / Priority +2
Nullifies Detect, Protect, and Quick/Wide Guard.
Normal - physical / 20-200 BP / 100%
More power the less HP the user has left.
Dark - physical / 10-130 BP / 100%
Flings the user's item at the target. Power varies.
Fighting - special / 120 BP / 70%
10% chance to lower the target's Sp. Def by 1.
Fighting - physical / 150 BP / 100% / Priority -3
Fails if the user takes damage before it hits.
Normal - physical / 150 BP / 90%
User cannot move next turn.
Grass - special / 20-120 BP / 100%
More power the heavier the target.
Normal - status / Priority +5
One adjacent ally's move power is 1.5x this turn.
Normal - special / 150 BP / 90%
User cannot move next turn.
Steel - physical / 100 BP / 75%
30% chance to lower the target's Defense by 1.
Dark - physical / 65-97.5 BP / 100%
1.5x damage if foe holds an item. Removes item.
Psychic - status
For 5 turns, special damage to allies is halved.
Psychic - status
For 5 turns, all held items have no effect.
Normal - physical / 120 BP / 75%
No additional effect.
Dark - status
Raises the user's Sp. Atk by 2.
Electric - physical / 20 BP / 100%
100% chance to paralyze the target.
Fairy - physical / 90 BP / 90%
10% chance to lower the target's Attack by 1.
Normal - status / Priority +4
Prevents moves from affecting the user this turn.
Psychic - special / 90 BP / 100%
10% chance to lower the target's Sp. Def by 1.
Psychic - special / 75 BP / 100%
For 2 turns, the target is prevented from healing.
Psychic - status
5 turns. Grounded: +Psychic power, priority-safe.
Psychic - special / 80 BP / 100%
Damages target based on Defense, not Sp. Def.
Normal - physical / 40 BP / 100% / Priority +1
Usually goes first.
Water - status
For 5 turns, heavy rain powers Water moves.
Psychic - status
For 5 turns, physical damage to allies is halved.
Psychic - status
User sleeps 2 turns and restores HP and status.
Fighting - physical / 20-200 BP / 100%
More power the less HP the user has left.
Electric - special / 70-140 BP / 100%
2x power if target is grounded in Electric Terrain.
Normal - special / 60 BP / 100%
Power doubles if others used Round this turn.
Psychic - status
The user and the target trade Abilities.
Normal - status
User must be asleep. Uses another known move.
Normal - special / 50 BP / 100%
User must be asleep. 30% chance to flinch target.
Psychic - status
Swaps Speed stat with target.
Psychic - special / 20-860 BP / 100%
+ 20 power for each of the user's stat boosts.
Normal - status
User takes 1/4 its max HP to put in a substitute.
Water - special / 90 BP / 100%
Hits adjacent Pokemon. Double damage on Dive.
Fairy - status / 75%
Causes the target to become confused.
Dark - physical / 60 BP / 100%
If the user has no item, it steals the target's.
Electric - special / 110 BP / 70%
30% chance to paralyze. Can't miss in rain.
Electric - physical / 75 BP / 100%
10% chance to paralyze the target.
Electric - status / 90%
Paralyzes the target.
Electric - special / 90 BP / 100%
10% chance to paralyze the target.
Normal - status / 100%
Lowers the target's Attack and Defense by 1.
Grass - physical / 50 BP / 100%
100% chance to raise the user's Speed by 1.
Fighting - physical / 65 BP / 100% / Priority +3
100% flinch. Fails unless target using priority attack.
Electric - special / 70 BP / 100%
User switches out after damaging the target.
Electric - physical / 120 BP / 100%
Has 33% recoil. 10% chance to paralyze target.
Electric - physical / 90 BP / 100%
Has 1/4 recoil.
Normal - status
Next turn, 50% of the user's max HP is restored.
Electric - special / 120 BP / 50%
100% chance to paralyze the target.