Orvar, the All-Form | Sakashima of a Thousand Faces

Cards

Mind Games in hand.
Orvar and
Sakashima of a Thousand Faces on the battlefield (
Sakashima of a Thousand Faces as a copy of
Orvar).

Cast
Mind Games with buyback by paying ({2} magic symbol) ({U} magic symbol) ({U} magic symbol) , targeting
Sakashima of a Thousand Faces.
Orvar triggers, creating a token copy of
Sakashima of a Thousand Faces that enters the battlefield as a token copy of
Orvar.
Resolve
Mind Games, returning it to your hand.
Cast
Mind Games with buyback by paying ({2} magic symbol) ({U} magic symbol) ({U} magic symbol) , targeting
Sakashima of a Thousand Faces.
Orvar and the
Sakashima of a Thousand Faces token trigger, creating two token copies of
Sakashima of a Thousand Faces that enters the battlefield as a token copy of
Orvar.
Resolve
Mind Games, returning it to your hand.
Cast
Mind Games with buyback by paying ({2} magic symbol) ({U} magic symbol) ({U} magic symbol) , targeting any Island that enters the battlefield untapped.
Orvar,
Sakashima of a Thousand Faces and the three
Sakashima of a Thousand Faces tokens trigger, creating five token copies of the Island.
Resolve
Mind Games, returning it to your hand.
Activate four of the Island tokens by tapping them, adding ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Repeat from step 7.
Once you have infinite mana, you can then target any artifact, creature or land using
Mind Games to get infinite tokens of them.

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