Together Forever + Ashnod's Altar + Hangarback Walker + Foundry Inspector

Together Forever

Ashnod's Altar

Hangarback Walker

Foundry Inspector

How it works

1. Cast Hangarback Walker by paying 1, causing it to enter the battlefield with a +1/+1 counter on it.
2. Activate Together Forever by paying 1, targeting Hangarback Walker.
3. Activate Ashnod's Altar by sacrificing Hangarback Walker, adding CC.
4. When Hangarback Walker dies, Together Forever triggers, returning Hangarback Walker from your graveyard to your hand.
5. Repeat.

This loop is a masterclass in recycling, turning a modest mechanical investment into an unstoppable engine. With Foundry Inspector holding the line by making artifacts cheaper to cast, Hangarback Walker returns to your hand for the exact amount of mana—two colorless—that Ashnod's Altar yields upon sacrificing it. The linchpin of the whole operation is Together Forever, whose activated ability ensures that your walking construct comes right back to your hand when it hits the graveyard, neatly dodging permanent loss and fueling infinite loops of death, sacrifices, and enters-the-battlefield triggers.