Activate Ashnod's Altar by sacrificing Tangled Colony, adding {C}{C}.
When Tangled Colony dies, it and Nim Deathmantle triggers.
Resolve the Nim Deathmantle trigger from step 2, causing you to pay {4} to return Tangled Colony from your graveyard to the battlefield, and attach Nim Deathmantle to it.
When Tangled Colony enters the battlefield, Pandemonium triggers, dealing damage equal to Tangled Colony's power to any target.
Resolve the Tangled Colony trigger, creating a 1/1 Rat creature token.
When the Rat enters the battlefield, Pandemonium triggers, dealing 1 damage to Tangled Colony.
Activate Ashnod's Altar by sacrificing the Rat, adding {C}{C}.
Repeat.

Infinite damage

Infinite death triggers

Infinite creature ETB

Infinite creature LTB

Infinite creature sacrifice triggers

Nim Deathmantle

Ashnod's Altar

Tangled Colony

Pandemonium

Activate Ashnod's Altar by sacrificing Tangled Colony, adding {C}{C}.
When Tangled Colony dies, it and Nim Deathmantle triggers.
Resolve the Nim Deathmantle trigger from step 2, causing you to pay {4} to return Tangled Colony from your graveyard to the battlefield, and attach Nim Deathmantle to it.
When Tangled Colony enters the battlefield, Terror of the Peaks triggers, dealing damage equal to Tangled Colony's power to any target.
Resolve the Tangled Colony trigger, creating a 1/1 Rat creature token.
When the Rat enters the battlefield, Terror of the Peaks triggers, dealing 1 damage to Tangled Colony.
Activate Ashnod's Altar by sacrificing the Rat, adding {C}{C}.
Repeat.

Terror of the Peaks

Activate Ashnod's Altar by sacrificing Tangled Colony, adding {C}{C}.
When Tangled Colony dies, it and Nim Deathmantle triggers.
Resolve the Nim Deathmantle trigger from step 2, causing you to pay {4} to return Tangled Colony from your graveyard to the battlefield, and attach Nim Deathmantle to it.
When Tangled Colony enters the battlefield, Warstorm Surge triggers, dealing damage equal to Tangled Colony's power to any target.
Resolve the Tangled Colony trigger, creating a 1/1 Rat creature token.
When the Rat enters the battlefield, Warstorm Surge triggers, dealing 1 damage to Tangled Colony.
Activate Ashnod's Altar by sacrificing the Rat, adding {C}{C}.
Repeat.

Warstorm Surge

Cast Shivan Meteor by paying {3}{R}{R}, dealing 13 damage to Tangled Colony.
Tangled Colony dies as a state-based action due to having less than 0 toughness.
Tangled Colony triggers, creating thirteen 1/1 Rat creature tokens.
Activate Phyrexian Altar eleven times by sacrificing eleven Rats, adding {6}{U}{U}{B}{R}{R}.
Activate Greenwarden of Murasa by paying {1}{U}, blinking it.
When Greenwarden of Murasa enters the battlefield, its first ability and Deadeye Navigator's soulbond ability trigger.
Resolve the Deadeye Navigator trigger, repairing it and Greenwarden of Murasa.
Resolve the Greenwarden of Murasa trigger, returning Tangled Colony to your hand from your graveyard.
Repeat from step 5 one additional time, returning Shivan Meteor to your hand using Greenwarden of Murasa instead.
Cast Tangled Colony by paying {1}{B}.
Repeat.

Infinite blinking

Infinite colored mana

Infinite creature tokens

Infinite magecraft triggers

Infinite storm count

Phyrexian Altar

Deadeye Navigator

Shivan Meteor

Greenwarden of Murasa

Cast Shivan Meteor by paying {3}{R}{R}, dealing 13 damage to Tangled Colony.
Tangled Colony dies as a state-based action due to having less than 0 toughness.
Tangled Colony triggers, creating thirteen 1/1 Rat creature tokens.
Activate Phyrexian Altar eleven times by sacrificing eleven Rats, adding {6}{U}{U}{B}{R}{R}.
Activate Timeless Witness by paying {1}{U}, blinking it.
When Timeless Witness enters the battlefield, it and Deadeye Navigator's soulbond ability trigger.
Resolve the Deadeye Navigator trigger, repairing it and Timeless Witness.
Resolve the Timeless Witness trigger, returning Tangled Colony to your hand from your graveyard.
Repeat from step 5 one additional time, returning Shivan Meteor to your hand using Timeless Witness instead.
Cast Tangled Colony by paying {1}{B}.
Repeat.

Timeless Witness

Cast Shivan Meteor by paying {3}{R}{R}, dealing 13 damage to Tangled Colony.
Tangled Colony dies as a state-based action due to having less than 0 toughness.
Tangled Colony triggers, creating thirteen 1/1 Rat creature tokens.
Activate Phyrexian Altar eleven times by sacrificing eleven Rats, adding {6}{U}{U}{B}{R}{R}.
Activate Skullwinder by paying {1}{U}, blinking it.
When Skullwinder enters the battlefield, it and Deadeye Navigator's soulbond ability trigger.
Resolve the Deadeye Navigator trigger, repairing it and Skullwinder.
Resolve the Skullwinder trigger, returning Tangled Colony to your hand from your graveyard, and cause an opponent to return a card from their graveyard to their hand.
Repeat from step 5 one additional time, returning Shivan Meteor to your hand using Skullwinder instead.
Cast Tangled Colony by paying {1}{B}.
Repeat.

Target opponent returns all cards in their graveyard to their hand

Skullwinder

Cast Shivan Meteor by paying {3}{R}{R}, dealing 13 damage to Tangled Colony.
Tangled Colony dies as a state-based action due to having less than 0 toughness.
Tangled Colony triggers, creating thirteen 1/1 Rat creature tokens.
Activate Phyrexian Altar eleven times by sacrificing eleven Rats, adding {6}{U}{U}{B}{R}{R}.
Activate Eternal Witness by paying {1}{U}, blinking it.
When Eternal Witness enters the battlefield, it and Deadeye Navigator's soulbond ability trigger.
Resolve the Deadeye Navigator trigger, repairing it and Eternal Witness.
Resolve the Eternal Witness trigger, returning Tangled Colony to your hand from your graveyard.
Repeat from step 5 one additional time, returning Shivan Meteor to your hand using Eternal Witness instead.
Cast Tangled Colony by paying {1}{B}.
Repeat.

Combos with "Tangled Colony"