Karv, Masochist's Whisper

+1: Draw a card, discard a card. Karv, Masochist's Whisper deals damage to you equal to the discarded card's converted mana cost.
-1: Destroy target artifact. Karv, Masochist's Whisper deals damage to you equal to that card's converted mana cost.
-5: You get an emblem with "Whenever a creature you control attacks deal 1 damage to each player."