Orthion, Hero of Lavabrink | Umbral Mantle | Ashnod's Altar

(and one other card)

All permanents on the battlefield.
Orthion does not have summoning sickness.
Umbral Mantle attached to
Orthion.
({6} magic symbol) ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) available.

Activate
Orthion's second ability by paying ({6} magic symbol) ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) and tapping it, creating five token copies of
Patron of the Arts with haste.
When the
Patron of the Arts tokens enter the battlefield, they trigger, creating five Treasure artifact tokens.
Activate
Ashnod's Altar three times by sacrificing three
Patron of the Arts tokens, adding six ({C} magic symbol) .
When the
Patron of the Arts tokens die, they trigger, creating three Treasure artifact tokens.
Activate six Treasures by tapping and sacrificing them, adding ({3} magic symbol) ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) .
Activate
Orthion by paying ({3} magic symbol) and untapping it, giving it +2/+2 until end of turn.
Repeat.
Once you have infinite mana, you may instead target any other creature you control.