Realmbreaker, the Invasion Tree

Description

Realmbreaker, the Invasion Tree (MOM-263) is a legendary artifact from March of the Machine. It has an activated milling ability that also lets you return a milled opponent's land to your battlefield tapped and makes that land exile if it would leave the battlefield. For a larger cost you can tap, pay ten mana, and sacrifice it to search your library for any number of Praetor cards and put them onto the battlefield.