Scourge of Valkas is a mythic Creature — Dragon card from Secret Lair Drop (SLD), collector number 1490. Current market price: $37.88, TCGplayer market prices via Scryfall.
Flying Whenever this creature or another Dragon you control enters, it deals X damage to any target, where X is the number of Dragons you control. {R}: This creature gets +1/+0 until end of turn.