Hellkite Courser | Cloudstone Curio | Food Chain

Cards

Your commander is on the battlefield and is a nonartifact creature with mana value 5 or greater.

Activate
Food Chain by exiling your commander, adding at least six ({R} magic symbol) that can only be spent to cast creature spells.
Choose to return your commander to the command zone from exile.
Cast Hellkite Charger by paying ({4} magic symbol) ({R} magic symbol) ({R} magic symbol) .
When Hellkite Charger enters the battlefield, it and
Cloudstone Curio trigger.
Resolve the
Cloudstone Curio trigger, choosing to return nothing to your hand from the battlefield.
Resolve the Hellkite Charger trigger, putting your commander onto the battlefield from the command zone.
When your commander enters the battlefield,
Cloudstone Curio triggers, returning Hellkite Charger from the battlefield to your hand.
Repeat.
If your commander has mana value 6 or greater, this combo nets infinite colored mana that can only be spent to cast creature spells.