Devin, the Cardmaster

This creature gets +X/+X when it enters the battlefield.

Cats:When this creature deals combat damage to any opponent, create a cat creature token.
All cats you control get +1/+1
When a player has to choose a creature type they must choose cats.
All nontoken creatures except this card count as cats.

Swaymp:Anytime you play a swamp you may call it a "Swaymp" and draw a card.