Qal Sisma, Heart of the Land

{3}: Search your library for a land and put it onto
the battlefield tapped
Landfall: When a land enters the battlefield under
your control, you gain 3 life, if this is the first
time this ability has resolved this turn. If it's the second, deal 3 damage to any target. If it's the
third, exile the top 3 cards of your library. You
may cast them without paying their mana costs.
Then reset this cycle.