Sarguut, the Desert Titan

Indestructible, Trample
Sarguut, the Desert Titan's has power equal to the number of Mountains you control and toughness
equal to the number of Plains you control.
Whenever Sarguut, the Desert Titan deals combat damage to a player, destroy target land that player controls. Then you may search your library for a Mountain or Plains and put it into the battlefield tapped.