The Gitrog Monster + Dakmor Salvage + Oblivion Crown
The Gitrog Monster
Dakmor Salvage
Oblivion Crown
Infinite self-millNear-infinitely large creature until end of turnNear-infinite self-discard triggers
How it works
Activate the creature with Oblivion Crown attached by discarding Dakmor Salvage.
The Gitrog Monster's third ability triggers, causing you to mill two cards and return Dakmor Salvage from your graveyard to your hand.
Resolve the ability from step 1, giving the creature +1/+1 until end of turn.
Repeat.
This elegant loop transforms the simple act of discarding into a devastating engine by turning Dakmor Salvage into a self-sustaining draw and dredge cycle. With Oblivion Crown attached to a creature, you can repeatedly discard the land to pump your creature, which immediately triggers The Gitrog Monster's draw ability. Because Dakmor Salvage has dredge, you can replace that drawn card by milling two cards to return the land straight back to your hand, fueling the loop infinitely.