Realmbreaker, the Invasion Tree
Legendary Artifact
, 
: 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."
, , Sacrifice Realmbreaker: Search your library for any number of Praetor cards, put them onto the battlefield, then shuffle.
Kekai Kotaki
Rulings
In a multiplayer game, if a player leaves the game, all cards that player owns leave as well. If you leave the game, any lands you control from Realmbreaker's ability are exiled.
(wotc • 2023-04-14)
The land card you put onto the battlefield can be one that was just milled, or it can be one that was already in their graveyard.
(wotc • 2023-04-14)
Rulings
In a multiplayer game, if a player leaves the game, all cards that player owns leave as well. If you leave the game, any lands you control from Realmbreaker's ability are exiled.
(wotc • 2023-04-14)
The land card you put onto the battlefield can be one that was just milled, or it can be one that was already in their graveyard.
(wotc • 2023-04-14)