The Daemonomicon of Iggwilv

All creatures with the subtype Demon, Devil,
or Imp are considered Demons, Devils, and
Imps in addition to their other subtypes.

Equipped creature is considered a Demon,
Devil, and Imp in addition to its other subtypes.

Equip {1}

{t}, Pay {x} Mana and name a Demon, Devil, or Imp creature with {x} mana cost. Add that creature to your
hand and pay {x} Life.