Omnipotence ~ Orver the Allform (EDH / Commander)

Going infinite:

Orvar, the All-Form + Peregrine Drake + Mind Games

Requires
Mind Games in hand. All permanents on the battlefield. You control up to five lands that can tap to produce at least 2UU.
Steps

1 Activate up to five lands you control by tapping them, adding at least 2UU.
2 Cast Mind Games with buyback by paying 2UU, targeting Peregrine Drake.
3 Orvar's first ability triggers, creating a token copy of Peregrine Drake.
4 When the Peregrine Drake token enters the battlefield, it triggers, untapping up to five lands.
5 Resolve Mind Games, returning it to your hand.
6 Repeat.
7 If you control up to five lands that can tap to produce at least 3UU, this combo nets infinite mana, which you can then target any creatures you control in step 2 to create infinite token copies of them.

Results
Infinite creature tokens. Infinite ETB. Infinite storm count. Infinite magecraft triggers.

Archaeomancer + Ghostly Flicker + Peregrine Drake

Requires
All permanents on the battlefield. Ghostly Flicker in hand. You control up to five lands that can tap to produce at least 2U.
Steps

1 Activate up to five lands by tapping them, adding at least 2U.
2 Cast Ghostly Flicker by paying 2U, blinking Archaeomancer and Peregrine Drake.
3 When Archaeomancer and Peregrine Drake enter the battlefield, their abilities trigger.
4 Resolve the Archaeomancer trigger, returning Ghostly Flicker to your hand from your graveyard.
5 Resolve the Peregrine Drake trigger, untapping up to five lands.
6 Repeat.
7 If you control five lands that can tap to produce at least 3U, this combo nets infinite mana, and you may blink any other permanent besides Peregrine Drake.

Results
Infinite mana lands you control can produce. Infinite ETB. Infinite LTB. Infinite storm count. Infinite magecraft triggers. Infinite landfall triggers. Infinite untap of lands you control. Infinite blinking.

Orvar, the All-Form + Peregrine Drake + Clockspinning

Requires
Clockspinning in hand. All permanents on the battlefield. You control up to five lands that can tap to produce at least 4U.
Steps

1 Activate up to five lands you control by tapping them, adding at least 4U.
2 Cast Clockspinning with buyback by paying 3U, targeting Peregrine Drake.
3 Orvar's first ability triggers, creating a token copy of Peregrine Drake.
4 The Peregrine Drake token enters the battlefield, untapping up to five lands.
5 Resolve Clockspinning, returning it to your hand.
6 Repeat.
7 Once you have infinite mana, you can target any permanents you control in step 2 to create infinite token copies of them.

Results
Infinite mana lands you control can produce. Infinite creature tokens. Infinite ETB. Infinite storm count. Infinite magecraft triggers. Infinite untap of lands you control. Infinite copies of permanents you control.

Orvar, the All-Form + Peregrine Drake + Whim of Volrath

Requires
Whim of Volrath in hand. All permanents on the battlefield. You control up to five lands that can tap to produce at least 3U.
Steps

1 Activate up to five lands you control by tapping them, adding at least 3U.
2 Cast Whim of Volrath with buyback by paying 2U, targeting Peregrine Drake.
3 Orvar's first ability triggers, creating a token copy of Peregrine Drake.
4 The Peregrine Drake token enters the battlefield, untapping up to five lands.
5 Resolve Whim of Volrath, returning it to your hand.
6 Repeat.
7 Once you have infinite mana, you can target any permanents you control in step 2 to create infinite token copies of them.

Results
Infinite mana lands you control can produce. Infinite creature tokens. Infinite ETB. Infinite storm count. Infinite magecraft triggers. Infinite untap of lands you control. Infinite copies of permanents you control.

Orvar, the All-Form + Spark Double + Mind Games

Requires
Mind Games in hand. All permanents on the battlefield. Spark Double on the battlefield as a copy of Orvar. You control an Island that enters the battlefield untapped. 6 plus six U available.
Steps

1 Cast Mind Games with buyback by paying 2UU, targeting Spark Double.
2 Orvar triggers, creating a token copy of Spark Double that enters the battlefield as a nonlegendary token copy of Orvar.
3 Resolve Mind Games, returning it to your hand.
4 Cast Mind Games with buyback by paying 2UU, targeting Spark Double.
5 Orvar and the Spark Double token trigger, creating two token copies of Spark Double that enters the battlefield as a nonlegendary token copy of Orvar.
6 Resolve Mind Games, returning it to your hand.
7 Cast Mind Games with buyback by paying 2UU, targeting any Island that enters the battlefield untapped.
8 Orvar, Spark Double and the three Spark Double tokens trigger, creating five token copies of the Island.
9 Resolve Mind Games, returning it to your hand.
10 Activate four of the Island tokens by tapping them, adding UUUU.
11 Repeat from step 7.
12 Once you have infinite mana, you can then target any artifact, creature or land using Mind Games to get infinite tokens of them.

Orvar, the All-Form + Sakashima of a Thousand Faces + Mind Games

Requires
Mind Games in hand. All permanents on the battlefield. Sakashima of a Thousand Faces on the battlefield as a copy of Orvar. You control an Island that enters the battlefield untapped. 6 plus six U available.
Steps

1 Cast Mind Games with buyback by paying 2UU, targeting Sakashima of a Thousand Faces.
2 Orvar triggers, creating a token copy of Sakashima of a Thousand Faces that enters the battlefield as a token copy of Orvar.
3 Resolve Mind Games, returning it to your hand.
4 Cast Mind Games with buyback by paying 2UU, targeting Sakashima of a Thousand Faces.
5 Orvar and the Sakashima of a Thousand Faces token trigger, creating two token copies of Sakashima of a Thousand Faces that ETB as a token copy of Orvar
6 Resolve Mind Games, returning it to your hand.
7 Cast Mind Games with buyback by paying 2UU, targeting any Island that enters the battlefield untapped.
8 Orvar, Sakashima of a Thousand Faces and the three Sakashima of a Thousand Faces tokens trigger, creating five token copies of the Island.
9 Resolve Mind Games, returning it to your hand.
10 Activate four of the Island tokens by tapping them, adding UUUU.
11 Repeat from step 7.
12 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 creature tokens. Infinite copies of artifacts, creatures and/or lands you control. Infinite mana lands you control can produce. Infinite ETB. Infinite storm count. Infinite magecraft triggers. Infinite landfall triggers. Infinite proliferate.

usw. usw. usw.