Pota Aimsitheoir

When Pota Aimsitheoir enters the battlefield, for each different basic land type you control, create a treasure token. (It's an artifact with "{t}, Sacrifice this artifact: Add one mana of any color.")
Pota Aimsitheoir gets +1/+1 for each treasure you control.
Whenever a player sacrifices a treasure token, they lose 1 life.