Disciple of Bolas
From Tarkir: Dragonstorm Commander set
Disciple of Bolas
Creature — Human Wizard
2/1
When this creature enters, sacrifice another creature. You gain X life and draw X cards, where X is that creature's power.
Rulings
- If you control at least one other creature when the ability resolves, you must sacrifice one. If you don't control any other creatures at that time, the ability won't do anything.
- The creature's power as it last existed on the battlefield is the amount of life you gain and the number of cards you draw.