Pokemon League

Pokemon League enters the battlefield tapped.
{t}: Add one mana of any color. Whenever you
cast a creature spell this turn, reveal cards from
the top of your library until you reveal a creature
card with equal or lesser mana value. Put that
card onto the battlefield. It gains haste and must
attack this turn if able. Put the rest of the cards revealed this way on the bottom of your library in
any order.