Skarrgan Hellkite is a mythic Creature — Dragon card from Ravnica Allegiance Promos (PRNA), collector number 114p. Current market price: $2.00 (foil $4.55), TCGplayer market prices via Scryfall.
Riot (This creature enters with your choice of a +1/+1 counter or haste.) Flying {3}{R}: This creature deals 2 damage divided as you choose among one or two targets. Activate only if this creature has a +1/+1 counter on it.