Crimson Vow Commander

Boreas Charger

Flying
When Boreas Charger leaves the battlefield, choose an opponent who controls more lands than you. Search your library for a number of Plains cards equal to the difference, reveal those cards, put one of them onto the battlefield tapped and the rest into your hand, then shuffle.

Commander 2021

Treasure Chest

Commander 2018

Flying
When Boreas Charger leaves the battlefield, choose an opponent who controls more lands than you. Search your library for a number of Plains cards equal to the difference and reveal them. Put one of them onto the battlefield tapped and the rest into your hand. Then shuffle your library.