Krark-Clan Ironworks + Wingrattle Scarecrow + Sigil Captain

Krark-Clan Ironworks

Wingrattle Scarecrow

Sigil Captain

How it works

1. Activate Krark-Clan Ironworks by sacrificing Wingrattle Scarecrow
2. When Wingrattle Scarecrow dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. When Wingrattle Scarecrow enters, Sigil Captain triggers, putting a +1/+1 counter on Wingrattle Scarecrow
4. Repeat.

This clever engine uses Krark-Clan Ironworks to continuously sacrifice Wingrattle Scarecrow for colorless mana, triggering its persist ability to bring it right back from the graveyard. Because Wingrattle Scarecrow returns with a -1/-1 counter, Sigil Captain steps in with its crucial static anthem ability, instantly placing two +1/+1 counters on the scarecrow as it enters. These counters immediately cancel out the -1/-1 counter through state-based actions, leaving Wingrattle Scarecrow completely clean and ready to feed back into the ironworks for an endless loop of resources.