Trono do Dragão de Tarkir
Artefato Lendário — Equipamento
A criatura equipada tem defensor e "

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: As outras criaturas que você controla ganham atropelar e recebem +X/+X até o final do turno, sendo X o poder desta criatura."
Equipar

The value of X is determined as the activated ability resolves. If the equipped creature isn't on the battlefield at that time, use its power the last time it was on the battlefield to determine the value of X.
If the equipped creature's power is negative while resolving the activated ability it gains, X is considered to be 0.