Mitnal, The Suicidal Deity

Trample, indestructible, pact (This card can't be sacrificed or targetted by spells or abilities you control.)
Whenever a source deals damage to Mitnal, that
source's controller sacrifices that many
permanents. Mitnal's controller then sacrifices
that many permanents.
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"I can destroy anything but myself. Despite my best attempts to leave this world, I can't."-Mitnal