Gempalm Incinerator is a uncommon Creature — Goblin card from Legions (LGN), collector number 94. Current market price: $1.11 (foil $69.99), 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.