Saheeli's Artistry | Possessed Skaab | Palinchron

Cards

You control up to seven lands that can tap to produce at least ({4} magic symbol) ({U} magic symbol) ({U} magic symbol) .

Activate up to seven lands by tapping them, adding at least ({4} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Cast
Saheeli's Artistry by paying ({4} magic symbol) ({U} magic symbol) ({U} magic symbol) , creating a token copy of
Palinchron that is an artifact.
When the
Palinchron token enters, it triggers, untapping up to seven lands.
Cast
Possessed Skaab by paying its mana cost.
When
Possessed Skaab enters, it triggers, returning
Saheeli's Artistry from your graveyard to your hand.
Activate up to seven lands by tapping them, adding at least ({4} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Cast
Saheeli's Artistry by paying ({4} magic symbol) ({U} magic symbol) ({U} magic symbol) , creating a token copy of
Possessed Skaab and the
Palinchron token.
When the
Possessed Skaab and
Palinchron tokens enter, they trigger.
Resolve the
Possessed Skaab token's trigger, returning
Saheeli's Artistry from your graveyard to your hand.
Resolve the
Palinchron token's trigger, untapping up to seven lands.
Repeat from step 6.

If the seven lands can tap to produce ({5} magic symbol) ({U} magic symbol) ({U} magic symbol) or more, this combo will net infinite mana. So long as you produce an extra ({U} magic symbol) each loop, you can eventually stop copying
Palinchron and copy other creature(s) or artifact(s) instead. You can also create two copies of
Possessed Skaab instead to return other applicable cards to your hand.