Oath of Lim-Dûl 

Enchantment
Whenever you lose life, for each 1 life you lost, sacrifice a permanent other than this enchantment unless you discard a card. (Damage dealt to you causes you to lose life.)
: Draw a card.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL