Gempalm Incinerator is a uncommon Creature — Goblin card from The List (PLST), collector number DMR-122. Current market price: $0.24, TCGplayer market prices via Scryfall.
Cycling {1}{R} ({1}{R}, Discard this card: Draw a card.) When you cycle this card, you may have it deal X damage to target creature, where X is the number of Goblins on the battlefield.