Sothera, the Supervoid {2}{B}{B}
Legendary Enchantment
Whenever a creature you control dies, each opponent chooses a creature they control and exiles it.
At the beginning of your end step, if a player controls no creatures, sacrifice Sothera, then put a creature card exiled with it onto the battlefield under your control with two additional +1/+1 counters on it.
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Shelob, Dread Weaver 87%
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"Whenever a nontoken creature an opponent controls dies, exile it."
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Promise of Tomorrow 85%
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"Whenever a creature you control dies, exile it."
+1 more matching line
Nightmare Shepherd 84%
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"Whenever another nontoken creature you control dies, you may exile it. If you do, create a token that's a copy of that creature, except it's 1/1 and it's a Nightmare in addition to its other types."
Myrkul, Lord of Bones 84%
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"Whenever another nontoken creature you control dies, you may exile it. If you do, create a token that's a copy of that card, except it's an enchantment and loses all other card types."
Hofri Ghostforge 84%
$0.22#7032
"Whenever another nontoken creature you control dies, exile it. If you do, create a token that's a copy of that creature, except it's a Spirit in addition to its other types and it has "When this token leaves the battlefield, return the exiled card to its owner's graveyard.""
Toshiro Umezawa 81%
$5.03#12668
"Whenever a creature an opponent controls dies, you may cast target instant card from your graveyard. If that spell would be put into a graveyard, exile it instead."