Horizons Titan

Vigilance
Whenever Horizons Titan enters the battlefield
or attacks, search your library for a land card,
reveal it, and put it into your hand and put a
+1/+1 counter on up to two other target
creatures. Then shuffle your library.
Whenever a land enters the battlefield, put a
+1/+1 counter on Horizons Titan and you gain
2 life.