Clock of Omens + Threefold Thunderhulk Combos

5 known combos featuring both cards in Commander

Infinite LTB Infinite ETB Infinite death triggers Infinite black mana Infinite creature tokens

Combo 1 with Kuldotha Forgemaster + Cauldron of Souls

Results: Infinite LTB · Infinite ETB · Infinite death triggers · Put all artifact cards from your library onto the battlefield
Steps
  1. Activate Cauldron of Souls by tapping it, targeting Threefold Thunderhulk.
  2. Activate Clock of Omens by tapping Threefold Thunderhulk and the other creature that enters with +1/+1 counter(s), untapping Kuldotha Forgemaster.
  3. Activate Kuldotha Forgemaster by tapping it and sacrificing Threefold Thunderhulk, the creature entering with +1/+1 counter(s) and another artifact.
  4. When Threefold Thunderhulk and the other creature die, their persist abilities trigger, returning them from your graveyard to the battlefield. The -1/-1 counters placed upon them will be removed by the +1/+1 counter(s) placed on them as they enter the battlefield.
  5. When Threefold Thunderhulk enters, it triggers, creating two 1/1 Gnome artifact creature tokens.
  6. Resolve the Kuldotha Forgemaster ability, searching your library for an artifact card and putting it onto the battlefield.
  7. Activate Clock of Omens by tapping two Gnomes, untapping Cauldron of Souls.
  8. Repeat.

Combo 2 with Illuminor Szeras + Grenzo, Dungeon Warden + Epitaph Golem

Results: Infinite black mana · Infinite creature tokens · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana artifacts you control can produce · Infinite sacrifice triggers · Infinite untap of artifacts you control
Show steps
  1. Activate Illuminor Szeras by tapping it and sacrificing Threefold Thunderhulk, adding seven {B}.
  2. Activate Epitaph Golem by paying {2}, putting Threefold Thunderhulk on the bottom of your library.
  3. Activate Grenzo by paying {2}, putting Threefold Thunderhulk from the bottom of your library into your graveyard, then putting it onto the battlefield.
  4. When Threefold Thunderhulk enters the battlefield, it triggers, creating three 1/1 Gnome artifact creature tokens.
  5. Activate Clock of Omens by tapping Threefold Thunderhulk and a Gnome token, untapping Illuminor Szeras.
  6. Repeat.

Combo 3 with Illuminor Szeras + Grenzo, Dungeon Warden + Reito Lantern

Results: Infinite black mana · Infinite creature tokens · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana artifacts you control can produce · Infinite sacrifice triggers · Infinite untap of artifacts you control
Show steps
  1. Activate Illuminor Szeras by tapping it and sacrificing Threefold Thunderhulk, adding seven {B}.
  2. Activate Reito Lantern by paying {3}, putting Threefold Thunderhulk on the bottom of your library.
  3. Activate Grenzo by paying {2}, putting Threefold Thunderhulk from the bottom of your library into your graveyard, then putting it onto the battlefield.
  4. When Threefold Thunderhulk enters the battlefield, it triggers, creating three 1/1 Gnome artifact creature tokens.
  5. Activate Clock of Omens by tapping Threefold Thunderhulk and a Gnome token, untapping Illuminor Szeras.
  6. Repeat.

Combo 4 with Illuminor Szeras + Grenzo, Dungeon Warden + Reito Sentinel

Results: Infinite black mana · Infinite creature tokens · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana artifacts you control can produce · Infinite sacrifice triggers · Infinite untap of artifacts you control
Show steps
  1. Activate Illuminor Szeras by tapping it and sacrificing Threefold Thunderhulk, adding seven {B}.
  2. Activate Reito Sentinel by paying {3}, putting Threefold Thunderhulk on the bottom of your library.
  3. Activate Grenzo by paying {2}, putting Threefold Thunderhulk from the bottom of your library into your graveyard, then putting it onto the battlefield.
  4. When Threefold Thunderhulk enters the battlefield, it triggers, creating three 1/1 Gnome artifact creature tokens.
  5. Activate Clock of Omens by tapping Threefold Thunderhulk and a Gnome token, untapping Illuminor Szeras.
  6. Repeat.

Combo 5 with Illuminor Szeras + Grenzo, Dungeon Warden + Soldevi Digger

Results: Infinite black mana · Infinite creature tokens · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana artifacts you control can produce · Infinite sacrifice triggers · Infinite untap of artifacts you control
Show steps
  1. Activate Illuminor Szeras by tapping it and sacrificing Threefold Thunderhulk, adding seven {B}.
  2. Activate Soldevi Digger by paying {2}, putting Threefold Thunderhulk on the bottom of your library.
  3. Activate Grenzo by paying {2}, putting Threefold Thunderhulk from the bottom of your library into your graveyard, then putting it onto the battlefield.
  4. When Threefold Thunderhulk enters the battlefield, it triggers, creating three 1/1 Gnome artifact creature tokens.
  5. Activate Clock of Omens by tapping Threefold Thunderhulk and a Gnome token, untapping Illuminor Szeras.
  6. Repeat.
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