Deep Spawn 



Creature — Homarid
Trample
At the beginning of your upkeep, sacrifice this creature unless you mill two cards.
{U}: This creature gains shroud until end of turn and doesn't untap during your next untap step. Tap this creature. (A creature with shroud can't be the target of spells or abilities.)
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Cards that do something similar expected a card that isn't here?
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Homarid Warrior 91%
$0.10#30461
"{U}: This creature gains shroud until end of turn and doesn't untap during your next untap step. Tap it."
Gurzigost 83%
$0.42#28287
"At the beginning of your upkeep, sacrifice this creature unless you put two cards from your graveyard on the bottom of your library."
Razormane Masticore 82%
$0.21#26753
"At the beginning of your upkeep, sacrifice this creature unless you discard a card."
Molten-Tail Masticore 82%
$0.39#29145
"At the beginning of your upkeep, sacrifice this creature unless you discard a card."
Masticore 82%
#24663
"At the beginning of your upkeep, sacrifice this creature unless you discard a card."
Shadowborn Demon 81%
$0.46#16251
"At the beginning of your upkeep, if there are fewer than six creature cards in your graveyard, sacrifice a creature."
Extravagant Spirit 81%
$0.36#31505
"At the beginning of your upkeep, sacrifice this creature unless you pay {1} for each card in your hand."
Endless Wurm 80%
$1.99#26828
"At the beginning of your upkeep, sacrifice this creature unless you sacrifice an enchantment."