Madame Null, Power Broker (#66)

Type: Legendary Creature — Demon Advisor

Text: Deathtouch
Whenever another creature you control enters, you may pay life equal to its power. If you do, put that many +1/+1 counters on it.

"We suffered a bit of a setback tonight, but rest assured: We'll have the planet purged and primed for you right on schedule."

Set: Teenage Mutant Ninja Turtles (#66)