Kalthon, Giant-Spawner

When Kalthon, Giant-Spawner enters the
battlefield, you and target opponent each draw 3
cards. Then, you gain 7 life, and may put a land
from your hand onto the battlefield. If you don't,
add {g/u}
When Kalthon enters the battlefield, sacrifice it
unless it escaped
Escape {2}{u}{u}{u}{g}{g}{g}