Herald of Kozilek + Krark-Clan Ironworks Combos

4 known combos featuring both cards in Commander

Infinite ETB Infinite LTB Infinite death triggers Infinite sacrifice triggers Infinite storm count

Combo 1 with Scrap Trawler + Myr Retriever

Also requires:

Results: Infinite ETB · Infinite LTB · Infinite colorless mana · Infinite death triggers · Infinite sacrifice triggers · Infinite storm count

Steps

Activate Krark-Clan Ironworks by sacrificing Myr Retriever, adding {C}{C}.
When Myr Retriever dies, it triggers, returning Scrap Trawler from your graveyard to your hand.
Cast Scrap Trawler by paying its mana cost, which is reduced by Herald of Kozilek.
Activate Krark-Clan Ironworks by sacrificing Scrap Trawler, adding {C}{C}.
When Scrap Trawler dies, it triggers, returning Myr Retriever from your graveyard to your hand.
Cast Myr Retriever by paying its mana cost, which is reduced by Herald of Kozilek.
Repeat.

151 decks Colorless View on Commander Spellbook →

Also requires:

Results: Destroy all permanents opponents control on each of your turns · Lock · Mass Land Denial

Show steps

Cast Sculpting Steel by paying {2} due to Herald of Kozilek. Choose to have it enter as a copy of Spine of Ish Sah.
When Sculpting Steel enters, its first ability triggers, destroying a permanent.
Activate Krark-Clan Ironworks by sacrificing Sculpting Steel, adding {C}{C}.
Sculpting Steel's second ability triggers, returning it from your graveyard to your hand.
Repeat.

10 decks Colorless View on Commander Spellbook →

Also requires:

Results: Infinite ETB · Infinite LTB · Infinite death triggers · Infinite sacrifice triggers · Infinite storm count

Show steps

Cast Tatterkite from your graveyard by paying {2} due to Herald of Kozilek. It won't enter with a finality counter on it due to its static ability.
Activate Krark-Clan Ironworks by sacrificing Tatterkite, adding {C}{C}
Repeat.

Colorless View on Commander Spellbook →