Play Glacial Chasm either from your hand or from your graveyard.
When Glacial Chasm enters the battlefield, its second ability triggers, causing you to sacrifice another land you control.
Pass the turn.
At the beginning of your next upkeep, Glacial Chasm's cumulative upkeep ability triggers, causing you to sacrifice it.
Play a land except Glacial Chasm from your graveyard.
Repeat.

Prevent all damage that would be dealt to you

Glacial Chasm

Azusa, Lost but Seeking

Conduit of Worlds

Cast Walk the Aeons by paying {4}{U}{U}, sacrificing Mystic Sanctuary and two other Islands, causing you to take an extra turn after this one and returning Walk the Aeons to your hand.
Play any Island except Mystic Sanctuary from your graveyard.
When the land enters the battlefield, Aesi triggers, allowing you to draw a card.
Move to your next turn.
Cast Walk the Aeons by paying {4}{U}{U}, causing you to take an extra turn after this one.
Play any Island except Mystic Sanctuary from your graveyard.
When the land enters the battlefield, Aesi triggers, allowing you to draw a card.
Play Mystic Sanctuary from your graveyard.
When Mystic Sanctuary enters the battlefield, it and Aesi trigger.
Resolve the Mystic Sanctuary trigger, putting Walk the Aeons on top of your library from your graveyard.
Resolve the Aesi trigger, causing you to draw Walk the Aeons from the top of your library.
Move to your next turn.
Repeat.

Infinite turns

Aesi, Tyrant of Gyre Strait

Walk the Aeons

Mystic Sanctuary

Activate Krark-Clan Ironworks by sacrificing The One Ring, adding {C}{C}.
Activate Conduit of Worlds by tapping it, causing you to pay {4} to cast The One Ring from your graveyard.
The One Ring triggers, giving you protection from everything until your next turn.
Repeat during each of your turns.

You cannot cast spells

You gain protection from everything

The One Ring

Krark-Clan Ironworks

At the beginning of your upkeep, Second Chance triggers, causing you to sacrifice it and take an extra turn after this one.
Activate Conduit of Worlds by tapping it, allowing you to cast Second Chance from your graveyard this turn.
Cast Second Chance by paying {2}{U}.
Repeat each turn.

Second Chance

Activate Phyrexia's Core's second ability by paying {1}, tapping it and sacrificing The One Ring, causing you to gain one life.
Activate Conduit of Worlds by tapping it, causing you to pay {4} to cast The One Ring from your graveyard.
The One Ring triggers, giving you protection from everything until your next turn.
Repeat during each of your turns.

Phyrexia's Core

Activate Arcbound Ravager by sacrificing The One Ring, putting a +1/+1 counter on Arcbound Ravager.
Activate Conduit of Worlds by tapping it, causing you to pay {4} to cast The One Ring from your graveyard.
The One Ring triggers, giving you protection from everything until your next turn.
Repeat during each of your turns.

Arcbound Ravager

Activate Ashnod's Altar by sacrificing Salvager of Secrets, adding {C}{C}.
Cast Time Stretch by paying {8}{U}{U}, causing you to take two extra turns after this one.
Move to your first extra turn.
Activate Conduit of Worlds by tapping it, causing you to pay {3}{U}{U} to cast Salvager of Secrets from your graveyard.
When Salvager of Secrets enters the battlefield, it triggers, returning Time Stretch from your graveyard to your hand.
Move to your second extra turn.
Repeat.

Time Stretch

Salvager of Secrets

Ashnod's Altar

Activate Ashnod's Altar by sacrificing Wormfang Manta, adding {C}{C}.
Wormfang Manta dies, triggering its second ability, causing you to take an extra turn after this one.
Activate Conduit of Worlds by tapping it, allowing you to cast Wormfang Manta from your graveyard this turn.
Cast Wormfang Manta by paying {5}{U}{U}.
Wormfang Manta enters the batltefield, but its first ability does not trigger due to Torpor Orb.
Repeat each turn.

Wormfang Manta

Torpor Orb

Activate Ashnod's Altar by sacrificing Shipwreck Dowser, adding {C}{C}.
Cast Time Stretch by paying {8}{U}{U}, causing you to take two extra turns after this one.
Move to your first extra turn.
Activate Conduit of Worlds by tapping it, causing you to pay {3}{U}{U} to cast Shipwreck Dowser from your graveyard.
When Shipwreck Dowser enters the battlefield, it triggers, returning Time Stretch from your graveyard to your hand.
Move to your second extra turn.
Repeat.

Shipwreck Dowser

Activate Phyrexian Altar by sacrificing Shipwreck Dowser, adding {U}.
Cast Time Stretch by paying {8}{U}{U}, causing you to take two extra turns after this one.
Move to your first extra turn.
Activate Conduit of Worlds by tapping it, causing you to pay {3}{U}{U} to cast Shipwreck Dowser from your graveyard.
When Shipwreck Dowser enters the battlefield, it triggers, returning Time Stretch from your graveyard to your hand.
Move to your second extra turn.
Repeat.

Phyrexian Altar

Activate Phyrexian Altar by sacrificing Salvager of Secrets, adding {U}.
Cast Time Stretch by paying {8}{U}{U}, causing you to take two extra turns after this one.
Move to your first extra turn.
Activate Conduit of Worlds by tapping it, causing you to pay {3}{U}{U} to cast Salvager of Secrets from your graveyard.
When Salvager of Secrets enters the battlefield, it triggers, returning Time Stretch from your graveyard to your hand.
Move to your second extra turn.
Repeat.

Activate Ashnod's Altar by sacrificing Archaeomancer, adding {C}{C}.
Cast Time Stretch by paying {8}{U}{U}, causing you to take two extra turns after this one.
Move to your first extra turn.
Activate Conduit of Worlds by tapping it, causing you to pay {2}{U}{U} to cast Archaeomancer from your graveyard.
When Archaeomancer enters the battlefield, it triggers, returning Time Stretch from your graveyard to your hand.
Move to your second extra turn.
Repeat.

Archaeomancer

Activate Phyrexian Altar by sacrificing Archaeomancer, adding {U}.
Cast Time Stretch by paying {8}{U}{U}, causing you to take two extra turns after this one.
Move to your first extra turn.
Activate Conduit of Worlds by tapping it, causing you to pay {2}{U}{U} to cast Archaeomancer from your graveyard.
When Archaeomancer enters the battlefield, it triggers, returning Time Stretch from your graveyard to your hand.
Move to your second extra turn.
Repeat.

Activate Ashnod's Altar by sacrificing Wormfang Manta, adding {C}{C}.
Wormfang Manta dies, triggering its second ability, causing you to take an extra turn after this one.
Activate Conduit of Worlds by tapping it, allowing you to cast Wormfang Manta from your graveyard this turn.
Cast Wormfang Manta by paying {5}{U}{U}.
Wormfang Manta enters the batltefield, but its first ability does not trigger due to Hushwing Gryff.
Repeat each turn.

Hushwing Gryff

Activate Ashnod's Altar by sacrificing Wormfang Manta, adding {C}{C}.
Wormfang Manta dies, triggering its second ability, causing you to take an extra turn after this one.
Activate Conduit of Worlds by tapping it, allowing you to cast Wormfang Manta from your graveyard this turn.
Cast Wormfang Manta by paying {5}{U}{U}.
Wormfang Manta enters the batltefield, but its first ability does not trigger due to Hushbringer.
Repeat each turn.

Hushbringer

Activate Ashnod's Altar by sacrificing Wormfang Manta, adding {C}{C}.
Wormfang Manta dies, triggering its second ability, causing you to take an extra turn after this one.
Activate Conduit of Worlds by tapping it, allowing you to cast Wormfang Manta from your graveyard this turn.
Cast Wormfang Manta by paying {5}{U}{U}.
Wormfang Manta enters the batltefield, but its first ability does not trigger due to Tocatli Honor Guard.
Repeat each turn.

Combos with "Conduit of Worlds"