Agrus Kos triggers, causing you to pay ({1} magic symbol) ({RW} magic symbol) to copy Soulbright Flamekin's ability, targeting every other creature you control.
Resolve all Soulbright Flamekin abilities, adding eight ({R} magic symbol) and giving creatures you control trample until end of turn.
Activate Jaxis by paying ({R} magic symbol) , tapping it and discarding a card, targeting Agrus Kos.
Agrus Kos triggers, causing you to pay ({1} magic symbol) ({RW} magic symbol) to copy Jaxis' ability, targeting every other creature you control.
Resolve all Jaxis abilities, creating a token that's a copy of each other creature you control with haste.
Put the token Agrus Kos into your graveyard due to the legend rule.
The Agrus Kos and Corridor Monitor tokens trigger.
Resolve the Agrus Kos trigger, causing you to draw a card.
Resolve the Corridor Monitor trigger, untapping Jaxis.
Repeat, using the Soulbright Flamekin token instead.