Merek, Vithian Champion

Deathtouch, Trample, Protection from Witches
Merek, Vithian Champion gets +1/+0 for each land you control but don't own.
Whenever this creature deals combat damage to a player, you may gain control of target land they control. If you do, each player may search their library for a basic land and put it onto the battle- field tapped. Any player who does, shuffles their library.