Twisted Riddlekeeper 
Creature — Eldrazi Sphinx
$0.14 #20097 0.25 2.3 years
Emerge 

(You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.)
When you cast this spell, tap up to two target permanents. Put a stun counter on each of them. (If a permanent with a stun counter would become untapped, remove one from it instead.)
Flying
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Cards similar to Twisted Riddlekeeper expected a card that isn't here?
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You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value."
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You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value."
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You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value."
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"Emerge 

You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value."
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"Emerge 
You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value."
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"Emerge 
You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value."
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"Emerge 

You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value."
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