Sonic the Hedgehog is a mythic Legendary Creature — Hedgehog Warrior card from Secret Lair Drop (SLD), collector number 2087. Current market price: $3.64, TCGplayer market prices via Scryfall.
Haste Gotta Go Fast — Whenever Sonic the Hedgehog attacks, put a +1/+1 counter on each creature you control with flash or haste. Whenever a creature you control with flash or haste is dealt damage, create a tapped Treasure token.