Preston's Stage (Black Lotus Unknown Planechase PLA033) - Common

Whenever a player performs a magic trick, they create a Hat token. (You perform a magic trick when you cast an instant or spell with flash, or turn a face-down creature face-up. Hat tokens are artifact tokens with ", , Sacrifice this artifact: Create a 1/1 white Rabbit creature token.")
Whenever Chaos ensues, until your next turn, creature cards in your hand have flash.