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 Phyrexian Altar five times by sacrificing the Patron of the Arts tokens, adding ({2} magic symbol) ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) .
When the Patron of the Arts tokens die, they trigger, creating five Treasure artifact tokens.
Activate seven Treasures by tapping and sacrificing them, adding ({7} magic symbol) .
Activate Sword of the Paruns by paying ({3} magic symbol) , untapping Orthion.
Repeat.
Once you have infinite mana, you may instead target any other creature you control.
Results
Infinite colored mana.
Infinite copies of creatures you control with haste.