Metal Sonic

Haste, Flying
Copycat — Whenever another creature enters the battlefield, you may have Metal Sonic gain that creature’s power and toughness or one of its abilities. (Metal Sonic must always make the same choice from each creature it copies for the rest of the game.)
Whenever a creature you control with haste or flash enters the
battlefield, create a tapped Power Core token. (It’s an artifact with “{T}, Sacrifice this artifact: Add one mana of any color. Spend this mana only to cast Cons