A greyscale rainbow, a broken heart and lightning all make for a scene only Nightmare Moon would create. Card info:
Doombow
Continuous Trap
Each time a "My Evil Pony" monster is Summoned, put 1 "Doombow" Counter on this card. You can send this card you control to the Graveyard to Special Summon 1 "My Evil Pony" monster from your hand whose Level equals the number of "Doombow" Counters that were on this card when it was sent to the Graveyard this way.
Common