Mruko the Dragontail

Vigilance, haste
Whenever Mruko the Dragontail becomes the target of a spell, create an X/X red and white Dragon creature token with flying and lifelink where X is equal to that spell's mana value.
{x}{x}{r}, {t}: Mruko deals X damage to each other non-Dragon creature. This ability costs {2} less to activate for each Dragon you control. Activate only as a sorcery.