Whenever a player casts a spell with converted mana cost 3 or less, Eidolon of the Great Revel deals 2 damage to that player.
Xenagos reveled while Theros burned.
2/2
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KHANS OF TARKIR 
COMMANDER 2014
FTV: ANNIHILATION 
SPEED vs CUNNING 
MAGIC 2015 
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