Activate Ashnod's Altar by sacrificing Frost Fair Lure Fish, adding {C}{C}.
When Frost Fair Lure Fish dies, Nim Deathmantle triggers, causing you to pay {4} to return Frost Fair Lure Fish from your graveyard to the battlefield and attach Nim Deathmantle to it.
When Frost Fair Lure Fish enters, it triggers, creating two 1/1 Fish creature tokens and two tapped Treasure tokens.
Activate Ashnod's Altar by sacrificing a creature token, adding {C}{C}.
Repeat.

Infinite artifact ETB

Infinite artifact tokens

Infinite creature ETB

Infinite creature LTB

Infinite colorless mana

Infinite death triggers

Infinite creature sacrifice triggers

Infinite tapped Treasure tokens

Infinite creature tokens with haste

Nim Deathmantle

Ashnod's Altar

Frost Fair Lure Fish

Activate Frost Fair Lure Fish by paying {1}{U}, blinking it.
When Frost Fair Lure Fish enters the battlefield, it and Deadeye Navigator's soullbond ability triggers.
Resolve the Deadeye Navigator trigger, repairing it and Frost Fair Lure Fish.
Resolve the Frost Fair Lure Fish trigger, creating two 1/1 Fish creature tokens and two tapped Treasure tokens.
When the Treasure tokens enters the battlefield, Amulet of Vigor triggers, untapping the Treasures.
Activate the Treasures by tapping and sacrificing them, adding {1}{U}.
Repeat.

Deadeye Navigator

Amulet of Vigor

Activate Eldrazi Displacer by paying {2}{C}, blinking Frost Fair Lure Fish.
When Frost Fair Lure Fish enters the battlefield, it triggers, creating two 1/1 Fish creature tokens and two tapped Treasure tokens.
Activate Krark-Clan Ironworks twice by sacrificing the Treasure tokens, adding {C}{C}{C}{C}.
Repeat.
Once you have infinite mana, you may forego sacrificing the Treasures.

Infinite blinking of most creatures

Infinite blinking

Eldrazi Displacer

Krark-Clan Ironworks

Activate Emiel the Blessed by paying {3}, blinking Frost Fair Lure Fish.
When Frost Fair Lure Fish enters the battlefield, it triggers, creating two 1/1 Fish creature tokens and two tapped Treasure tokens.
Activate Ashnod's Altar twice by sacrificing the Fish tokens, adding {C}{C}{C}{C}.
Repeat.
Once you have infinite mana, you may forego sacrificing the Fish.

Emiel the Blessed

Activate Emiel the Blessed by paying {3}, blinking Frost Fair Lure Fish.
When Frost Fair Lure Fish enters the battlefield, it triggers, creating two 1/1 Fish creature tokens and two tapped Treasure tokens.
Activate Krark-Clan Ironworks twice by sacrificing the Treasures, adding {C}{C}{C}{C}.
Repeat.
Once you have infinite mana, you may forego sacrificing the Treasures.

Combos with "Frost Fair Lure Fish"