Encantamento Lendário — Antecedente
As criaturas comandantes que você possui têm "

, sacrifique um artefato: Coloque um marcador +1/+1 nesta criatura e compre um card".
If a card refers to a commander creature you own, a Background won't usually be counted or included for that effect. If another spell or ability causes your Background to become a creature, however, it will be included. Any effect that refers to your commander or a commander you own or control without specifying creature will apply to a Background that is your commander, as appropriate.