Double Vision | Venser, Shaper Savant | Panharmonicon

(and one other card)

Venser and
Nexus of Fate in hand.
Double Vision and
Panharmonicon on the battlefield.
You have not cast any instant or sorcery spell this turn.
({7} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) available.

Cast
Nexus of Fate by paying ({5} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Double Vision triggers, creating a copy of
Nexus of Fate.
Holding priority, cast
Venser by paying ({2} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Venser enters the battlefield, returning itself and original
Nexus of Fate to your hand.
Resolve the
Nexus of Fate copy, causing you to take an extra turn after this one.
Move to your extra turn.
Repeat.