Mufasa, King of the Pride

When Mufasa, King of the Pride enters the battlefield, draw a card.
Landfall — Whenever a land enters the
battlefield under your control, you gain four life
if this is the first time the ability has resolved this
turn. If it's the second time, add {r}{g}{w}{u}. If it's
the third time, Mufasa deals 4 damage to each
opponent and each planeswalker you don't
control.