Emiel the Blessed | Preston, the Vanisher | Delney, Streetwise Lookout

(and one other card)

Activate
Emiel the Blessed by paying ({3} magic symbol) , blinking
Patron of the Arts.
When
Patron of the Arts enters the battlefield, it triggers once, and
Preston triggers twice.
Resolve the
Patron of the Arts trigger, creating a Treasure token.
Resolve the first
Preston trigger, creating a token copy of
Patron of the Arts that is a 0/1 Illusion.
When the
Patron of the Arts token enters the battlefield, it triggers, creating a Treasure token.
Repeat from step 4 for the remaining
Preston trigger.
Activate three Treasures by tapping and sacrificing them, adding ({3} magic symbol) .
Repeat.