Inalla, Archmage Ritualist | Barrin, Master Wizard | Great Whale

(and one other card)

Great Whale in hand.
Inalla on the battlefield or in the command zone.
Barrin and
Xenograft on the battlefield.
You control up to seven lands that can tap to produce at least ({5} magic symbol) ({U} magic symbol) .
"Wizard" chosen with
Xenograft.
({U} magic symbol) available.

Activate up to seven lands by tapping them, adding at least ({5} magic symbol) ({U} magic symbol) .
Cast
Great Whale by paying ({5} magic symbol) ({U} magic symbol) ({U} magic symbol) .
When
Great Whale enters the battlefield, it and
Inalla trigger.
Resolve the
Great Whale trigger, untapping up to seven lands.
Activate up to seven lands by tapping them, adding at least ({5} magic symbol) ({U} magic symbol) .
Resolve the
Inalla trigger, causing you to pay ({1} magic symbol) to create a token copy of
Great Whale.
When the
Great Whale token enters the battlefield, it triggers, untapping up to seven lands.
Activate
Barrin by paying ({2} magic symbol) and sacrificing the
Great Whale token, returning the nontoken
Great Whale from the battlefield to your hand.
Repeat.