Activate Phyrexian Altar by sacrificing Reef Worm, adding {U}.
When Reef Worm dies, it and Enduring Renewal triggers.
Resolve the Reef Worm trigger, creating a 3/3 Fish creature token.
Resolve the Enduring Renewal trigger, returning Reef Worm from your graveyard to your hand.
Activate Phyrexian Altar by sacrificing the Fish, adding {1}.
When the Fish dies, it triggers, creating a 6/6 Whale creature token.
Activate Phyrexian Altar by sacrificing the Whale, adding {1}.
When the Whale dies, it triggers, creating a 9/9 Kraken creature token.
Activate Phyrexian Altar by sacrificing the Kraken, adding {1}.
Cast Reef Worm by paying {3}{U}.
Repeat.

Infinite death triggers

Infinite ETB

Infinite LTB

Infinite sacrifice triggers

Infinite storm count

Enduring Renewal

Phyrexian Altar

Reef Worm

Activate Bloodshot Cyclops by tapping it and sacrificing Reef Worm.
When Reef Worm dies, it and Bloodshot Cyclops trigger.
Resolve the Reef Worm trigger, creating two 3/3 Fish creature tokens.
Resolve the Bloodshot Cyclops trigger, untapping it.
Resolve the Bloodshot Cyclops ability from step 1.
Activate Bloodshot Cyclops by tapping it and sacrificing a Fish.
When the Fish dies, it and Bloodshot Cyclops trigger.
Resolve the Fish trigger, creating two 6/6 Whale creature tokens.
Resolve the Bloodshot Cyclops trigger, untapping it.
Resolve the Bloodshot Cyclops ability from step 6, dealing damage equal to the FIsh's power to any target.
Repeat from step 6 using the other Fish token.
Activate Bloodshot Cyclops by tapping it and sacrificing a Whale.
When the Whale dies, it and Bloodshot Cyclops trigger.
Resolve the Whale trigger, creating two 9/9 Kraken creature tokens.
Resolve the Bloodshot Cyclops trigger, untapping it.
Resolve the Bloodshot Cyclops ability from step 12, dealing damage equal to the Whale's power to any target.
Repeat from step 12 for each other Whale token.
Activate Bloodshot Cyclops by tapping it and sacrificing a Kraken.
When the Kraken dies, Bloodshot Cyclops triggers, untapping Bloodshot Cyclops.
Resolve the Bloodshot Cyclops ability from step 18, dealing damage equal to the Kraken's power to any target.
Repeat from step 18 for each other Kraken token.

Near-infinite damage

Bloodshot Cyclops

Thornbite Staff

Exalted Sunborn

Combos with "Reef Worm"