regigigas pokemon card Cards | Dex Colorless Artist Regigigas (Space-Time Smackdown #143/208, 3-Diamonds)

When a creature with squad enters, for each time you paid its squad cost, you create a token copy of the creature

Aatchik, Emerald Radian Imagine how big Aatchik, Emerald Radian must be for it to cost six mana

I'd be happy to hear from you

For mana values, the following rules apply: The mana value of a creature being cast for its mutate cost is based on whatever its mana cost is

As such, unless there's a bunch of spicy things in graveyards that folks feel they can get their hands on (and they don't understand that you could just steal them out from under them with your copies that resolve first), I would expect most people to say no to letting you copy reanimation spells, and I think that they would be right to do so