Realmbreaker, the Invasion Tree is a rare Legendary Artifact card from March of the Machine (MOM), collector number 374. Current market price: $1.01 (foil $1.44), TCGplayer market prices via Scryfall.
{2}, {T}: Target opponent mills three cards. Put a land card from their graveyard onto the battlefield tapped under your control. It gains "If this land would leave the battlefield, exile it instead of putting it anywhere else." {10}, {T}, Sacrifice Realmbreaker: Search your library for any number of Praetor cards, put them onto the battlefield, then shuffle.