Grenzo, Dungeon Warden + Threefold Thunderhulk + Krark-Clan Ironworks + Reito Sentinel

Grenzo, Dungeon Warden

Threefold Thunderhulk

Krark-Clan Ironworks

Reito Sentinel

How it works

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.

This clever loop relies on Grenzo, Dungeon Warden as a rogue-like command center, peering at the bottom of your library to cheat out creatures whose power matches or exceeds Grenzo's own. When Threefold Thunderhulk drops onto the battlefield, its enter-the-battlefield ability generates a flurry of Gnome artifact creature tokens scaled to its swollen power. Those tokens—alongside the Thunderhulk itself—are eagerly fed to Krark-Clan Ironworks, converting the metal horde into a massive reserve of colorless mana. Finally, Reito Sentinel steps in as the recyclers' best friend, paying to tuck the Thunderhulk right back onto the bottom of the library so Grenzo can dredge it up and do it all over again.