Terra, Of Two Worlds

Prowess
Whenever you cast your third spell of the
turn that targets Terra, Of Two Worlds, put two
+1/+1 counters on it. Then, put a flying, lifelink,
or vigilance counter on it.
If Terra has flying, lifelink, and vigilance and
deals combat damage to any permanent or player,
it deals double that damage to that permanent or
player instead.