Treacherous Blessing 
Enchantment
When this enchantment enters, draw three cards. Whenever you cast a spell, you lose 1 life. When this enchantment becomes the target of a spell or ability, sacrifice it.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL