Jin-Gitaxias, Progress Tyrant | Venser, Shaper Savant | Naban, Dean of Iteration

(and one other card)

Venser and
Walk the Aeons in hand.
Jin-Gitaxias and
Naban on the battlefield.
You haven't copied a spell using
Jin-Gitaxias this turn.
({6} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) each turn available.

Cast
Walk the Aeons by paying ({4} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Jin-Gitaxias triggers, copying
Walk the Aeons.
Holding priority, cast
Venser by paying ({2} magic symbol) ({U} magic symbol) ({U} magic symbol) .
When
Venser enters the battlefield, it triggers twice, returning itself and the original
Walk the Aeons to your hand from the battlefield and stack respectively.
Resolve the copy of
Walk the Aeons, causing you to take an extra turn after this one.
Repeat each turn.