Reflections of Littjara | The Master, Formed Anew | Venser, Shaper Savant (and one other card)

Cards

"Time Lord" or "Rogue" chosen with
Reflections of Littjara.
Venser and
Great Whale have at least one takeover counter on them.
You control up to seven lands that can tap to produce at least ({U} magic symbol) ({B} magic symbol) .
You have enough mana to pay for commander tax, if applicable.

Activate up to seven lands you control by tapping them, adding at least ({U} magic symbol) ({B} magic symbol) .
Cast
The Master either from your hand or from the command zone by paying ({U} magic symbol) ({B} magic symbol) and commander tax, if applicable.
Reflections of Littjara triggers, copying the Master spell.
Resolve the copy of the Master spell, choosing to having the Master token enter the battlefield as a copy of
Great Whale.
When the token Master enters the battlefield, it triggers, untapping up to seven lands.
Resolve the original Master spell, choosing to have it enter the battlefield as a copy of
Venser.
When the nontoken Master enters the battlefield, it triggers, returning itself from the battlefield to your hand.
Repeat.

This combo has been estimated to be Exhibition (Bracket 1+).