Gempalm Polluter is a common Creature — Zombie card from The List (PLST), collector number LGN-70. Current market price: $0.26, TCGplayer market prices via Scryfall.
Cycling {B}{B} ({B}{B}, Discard this card: Draw a card.) When you cycle this card, you may have target player lose life equal to the number of Zombies on the battlefield.