St. Duncan of Gavony

Eminence —Whenever an Equipment enters the battlefield under your control, you may pay {1}. If you do, draw a card.
When St. Duncan enters the battlefield, put a
legendary colorless Equipment artifact token
named Moonlight onto the battlefield attached
to him. It has indestructible, "At the beginning
of each upkeep choose a color. Equipped creature
has protection from the chosen color until the
end of the turn", and Equip {2}.