Mirror Mastery

Trench Gorger

Trample
When this creature enters, you may search your library for any number of land cards, exile them, then shuffle. If you do, this creature has base power and base toughness each equal to the number of cards exiled this way.

Trample
When Trench Gorger enters the battlefield, you may search your library for any number of land cards, exile them, then shuffle your library. If you do, Trench Gorger's power and toughness each become equal to the number of cards exiled this way.