How can you create a combo with Grenzo, Dungeon Warden, Krark-Clan Ironworks, Reito Sentinel, Threefold Thunderhulk?
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[START OF COMBO]This combo can be formed with Grenzo, Dungeon Warden, Krark-Clan Ironworks, Reito Sentinel, Threefold Thunderhulk

Color identity: BR
Mana cost: {5}
Steps:
  1. Activate Reito Sentinel by paying {3}, 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 {C}.
  5. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana
  - Infinite creature tokens
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Grenzo, Dungeon Warden must be on the battlefield
  - Krark-Clan Ironworks must be on the battlefield
  - Reito Sentinel must be on the battlefield
  - Threefold Thunderhulk must be in the graveyard
[END OF COMBO PREREQUISITES]
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