Saheeli, Sublime Artificer | Venser, the Sojourner | Mirror of Fate

(and one other card)

Alrund's Epiphany in hand or in exile.
All permanents on the battlefield.
Saheeli has at least three loyalty counters.
({1} magic symbol) fewer mana required on the first turn if
Alrund's Epiphany was foretold.
({5} magic symbol) ({U} magic symbol) ({U} magic symbol) each turn available.

Cast
Alrund's Epiphany by paying ({5} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Saheeli triggers, creating a 1/1 Servo artifact creature token.
Resolve
Alrund's Epiphany, causing you to create two 1/1 Bird creature tokens, take an extra turn after this one and exile
Alrund's Epiphany.
Activate
Saheeli by removing two loyalty counters from it, causing the Servo to become a copy of
Mirror of Fate until end of turn.
Activate the Servo by tapping and sacrificing it, choosing
Alrund's Epiphany and up to six other cards face up in exile, then exiling your library and putting the chosen cards on top of your library, with
Alrund's Epiphany being the topmost card.
If
Saheeli has fewer than three loyalty counters on it, activate
Venser's first loyalty ability by putting two loyalty counters on it, exiling
Saheeli until your next end step.
At the beginning of your end step, if you activated
Venser's ability,
Venser triggers, returning
Saheeli from exile to the battlefield.
Repeat each turn, drawing
Alrund's Epiphany during your draw step.