Goro-Goro, Disciple of Ryusei is a rare Legendary Creature — Goblin Samurai card from Magic Online Promos (PRM), collector number 97989.
{R}: Creatures you control gain haste until end of turn. {3}{R}{R}: Create a 5/5 red Dragon Spirit creature token with flying. Activate only if you control an attacking modified creature. (Equipment, Auras you control, and counters are modifications.)