Pran the Final Dragon

Whenever you draw your first card
each turn reveal it.
If it is {w} gain 2 life.
If it is {u} draw a card.
If it is {b} create a 2/2 zombie.
If it is {r} deal 3 damage to target creature or player.
If it is {g} create {g}{g} this mana
doesnt drain as steps and phases end.