Krark-Clan Ironworks + Nim Deathmantle + Threefold Thunderhulk
Krark-Clan Ironworks
Nim Deathmantle
Threefold Thunderhulk
Infinite +1/+1 counters on a creatureInfinite colorless manaInfinite creature tokensInfinite death triggersInfinite creature ETBInfinite creature LTBInfinite creature sacrifice triggers
How it works
Activate Krark-Clan Ironworks by sacrificing Threefold Thunderhulk, adding CC.
When Threefold Thunderhulk dies, Nim Deathmantle triggers, returning Threefold Thunderhulk from your graveyard to the battlefield, and attaching Nim Deathmantle to it.
When Threefold Thunderhulk enters the battlefield, it triggers, creating a number of 1/1 Gnome artifact creature tokens equal to its power.
Activate Krark-Clan Ironworks by sacrificing a Gnome, adding CC.
Repeat.
This clever loop turns Threefold Thunderhulk into a self-sustaining engine by leveraging the mana-generating power of Krark-Clan Ironworks alongside the recursive resurrection of Nim Deathmantle. When you sacrifice the Thunderhulk to the Ironworks, its death triggers the Deathmantle, which uses a portion of the generated colorless mana to bring the Thunderhulk right back to the battlefield. Because the Thunderhulk enters with a payload of Gnome tokens based on its power, you have an immediate supply of extra artifacts to sacrifice to Krark-Clan Ironworks for even more mana, leaving you with a surplus of resources and an endless cycle of enters-the-battlefield and death triggers.