Vampire Scrivener 
Creature — Vampire Warlock
Flying Whenever you gain life during your turn, put a +1/+1 counter on this creature. Whenever you lose life during your turn, put a +1/+1 counter on this creature.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL