Chandra's first loyalty ability by putting a loyalty counter on it, adding at least ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) .
Activate
Luxior's first equip ability by paying ({1} magic symbol) , attaching it to
Chandra.
Activate
Emiel by paying ({3} magic symbol) , blinking
Chandra.
Repeat.
If you control five or more planeswalkers, this combo nets infinite red mana.