How come Victini can learn Glaciate, Bolt Strike, and Blue Flare?

Question

On Pokémon Showdown, it seems like Mythical can learn Legendary signature moves, such as the ones in the question, and Darkrai learning Spacial Rend. What's the deal?

Comments

Because they were given to some event Victini.

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It was an event thing.

Answer 1

It's because of events.

Victini gets those moves from Pokémon Center Tohoku Victini event, and Darkrai can learn Spacial Rend (and Roar of Time) from Cinema Darkrai event.

Comments

Thanks! That makes sense.