Orvar and Sakashima of a Thousand Faces on the battlefield (Sakashima of a Thousand Faces as a copy of Orvar).
You control an Island that enters the battlefield untapped.
({6} magic symbol) plus six.
({U} magic symbol) available.
Steps
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.
Results
Infinite copies of artifacts, creatures and/or lands you control.