Activate Ashnod's Altar by sacrificing Core Prowler, adding {C}{C}.
When Core Prowler dies, it triggers, putting an indestructible counter on Myojin.
Activate Myojin by removing an indestructible counter from it, returning Core Prowler from your graveyard to the battlefield.
Repeat.

Infinite blinking

Infinite colorless mana

Infinite death triggers

Infinite ETB

Infinite LTB

Infinite proliferate

Infinite sacrifice triggers

Myojin of Grim Betrayal

Core Prowler

Ashnod's Altar

Activate Phyrexian Altar by sacrificing Core Prowler, adding one mana of any color.
When Core Prowler dies, it triggers, putting an indestructible counter on Myojin.
Activate Myojin by removing an indestructible counter from it, returning Core Prowler from your graveyard to the battlefield.
Repeat.

Infinite colored mana

Phyrexian Altar

Sacrifice Core Prowler to Ashnod's Altar for {C}{C}.
Proliferate the lore counter on The Eldest Reborn.
Target Core Prowler with the saga trigger.
In response to the saga trigger use Bog Initiate to turn one of the generic mana from Ashnod's Altar into {B} and activate Hex Parasite having x be 1 targeting Eldest Reborn lowering it to two lore counters.
Hex Parasite gets +1/+0 until end of turn.
Resolve the saga trigger returning Core Prowler to the battlefield.
Repeat.

Infinitely powerful creature until end of turn

The Eldest Reborn

Hex Parasite

Bog Initiate

Activate Ashnod's Altar by sacrificing Core Prowler, adding {C}{C}.
Core Prowler dies, triggering itself and Nim Deathmantle.
Resolve the Core Prowler trigger, causing you to proliferate.
Venser triggers, creating a legendary 3/3 The Hollow Sentinel artifact creature token.
Activate Ashnod's Altar by sacrificing The Hollow Sentinel, adding {C}{C}.
Resolve the Nim Deathmantle trigger from step 2, causing you to pay {4} to return Core Prowler from your graveyard to the battlefield, and attach Nim Deathmantle to it.
Repeat.


Venser, Corpse Puppet

Nim Deathmantle

Activate Krark-Clan Ironworks by sacrificing Core Prowler, adding {C}{C}.
Core Prowler dies, triggering itself and Nim Deathmantle.
Resolve the Core Prowler trigger, causing you to proliferate.
Venser triggers, creating a legendary 3/3 The Hollow Sentinel artifact creature token.
Activate Krark-Clan Ironworks by sacrificing The Hollow Sentinel, adding {C}{C}.
Resolve the Nim Deathmantle trigger from step 2, causing you to pay {4} to return Core Prowler from your graveyard to the battlefield, and attach Nim Deathmantle to it.
Repeat.


Combos with "Core Prowler"