Eidolon of the Great Revel

大歓楽の幻霊 (Eidolon of the Great Revel) (ja)

Enchantment Creature - Spirit | Power/Toughness: 2 / 2 (CMC 2)
Whenever a player casts a spell with mana value 3 or less, Eidolon of the Great Revel deals 2 damage to that player.