Orthion, Hero of Lavabrink | Priest of Urabrask | Thornbite Staff

(and one other card)

Activate
Orthion's first ability by paying ({1} magic symbol) ({R} magic symbol) and tapping it, creating a token copy of
Priest of Urabrask with haste.
When the token
Priest of Urabrask enters the battlefield, it triggers, adding ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) .
Activate
Goblin Bombardment by sacrificing the
Priest of Urabrask token.
When the
Priest of Urabrask token dies,
Orthion triggers, untapping itself.
Resolve the
Goblin Bombardment ability, dealing 1 damage to any target.
Repeat.
Once you have infinite colored mana, you may instead use
Orthion's second ability to make copies of any creature(s) you control.