Redshift, Rocketeer Chief (Aetherdrift Promos)

Legendary Creature — Goblin Pilot - Vigilance
{T}: Add X mana of any one color, where X is Redshift's power. Spend this mana only to activate abilities.
Exhaust — {10}{R}{G}: Put any number of permanent cards from your hand onto the battlefield. (Activate each exhaust ability only once.)