Ivy, Gleeful Spellthief | Treachery | Retraction Helix (and one other card)

Cards

You control up to four lands excluding
Minamo that can tap to produce at least ({1} magic symbol) ({U} magic symbol) ({U} magic symbol) .
There is another creature on the battlefield.

Activate
Minamo and up to four other lands you control by tapping them, adding at least ({1} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Cast
Retraction Helix by paying ({U} magic symbol) , targeting
Ivy.
Cast
Treachery by paying ({3} magic symbol) ({U} magic symbol) ({U} magic symbol) , targeting a creature other than
Ivy.
Ivy triggers, copying the
Treachery spell, with the copy targeting
Ivy.
Resolve the copy of the
Treachery spell, creating a copy of
Treachery attached to
Ivy.
When the
Treachery token enters the battlefield, it triggers, untapping up to five lands.
Holding priority, activate up to four lands excluding
Minamo by tapping them, adding at least ({1} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Activate
Minamo's second ability by paying ({U} magic symbol) and tapping it, untapping
Ivy.
Resolve the original
Treachery spell.
When
Treachery enters the battlefield, it triggers, untapping up to five lands.
Activate
Ivy by tapping it, returning the nontoken
Treachery from the battlefield to your hand.
Activate
Minamo and up to four other lands you control by tapping them, adding at least ({1} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Repeat from step 3.

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