Grenzo, Dungeon Warden + Threefold Thunderhulk + Krark-Clan Ironworks + Barkform Harvester

Grenzo, Dungeon Warden
Threefold Thunderhulk
Krark-Clan Ironworks
Barkform Harvester

Requires
Grenzo, Dungeon Warden must be on the battlefield. Threefold Thunderhulk must be on the battlefield. Krark-Clan Ironworks must be on the battlefield. Barkform Harvester must be on the battlefield. Mana needed: 4
Steps
  1. Activate Barkform Harvester by paying 2, putting Threefold Thunderhulk on the bottom of your library from your graveyard.
  2. Activate Grenzo by paying 2, putting Threefold Thunderhulk into your graveyard from the bottom of your library, and then putting it onto the battlefield.
  3. When Threefold Thunderhulk enters the battlefield, it triggers, creating three 1/1 Gnome artifact creature tokens.
  4. Activate Krark-Clan Ironworks three times by sacrificing Threefold Thunderhulk and two Gnomes, adding six .
  5. Repeat.
Results
Infinite LTB. Infinite ETB. Infinite sacrifice triggers. Infinite death triggers. Infinite colorless mana.

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