Yuma, Proud Protector (Borderless) (4) [Outlaws of Thunder Junction Commander]

This spell costs {1} less to cast for each land card in your graveyard. Whenever Yuma enters or attacks, you may sacrifice a land. If you do, draw a card. Whenever a Desert card is put into your graveyard from anywhere, create a 4/2 green Plant Warrior creature token with reach.