Criatura — Chamán elfo
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Los hechizos y habilidades que controlan tus oponentes no te pueden hacer sacrificar permanentes.
As a spell or ability an opponent controls resolves, if it would force you to sacrifice a permanent (as the annihilator ability does), you just don’t. That part of the effect does nothing. If that spell or ability gives you the option to sacrifice a permanent (as Prowling Pangolin’s ability does), you can’t take that option.