Witch-Maw Nephilim + Animation Module + Pitiless Plunderer + Clockspinning + Krark-Clan Ironworks

Witch-Maw Nephilim

Animation Module

Pitiless Plunderer

Clockspinning

Krark-Clan Ironworks

How it works

1. Cast Clockspinning with buyback by paying 3, targeting Witch-Maw Nephilim.
2. Witch-Maw Nephilim's first ability triggers, putting two +1/+1 counters on it.
3. Animation Module triggers, causing you to pay 1 to create a 1/1 Servo artifact creature token.
4. Activate Krark-Clan Ironworks by sacrificing the Servo, adding CC.
5. When the Servo dies, Pitiless Plunderer triggers, creating a Treasure artifact token.
6. Resolve Clockspinning, putting a +1/+1 counter on Witch-Maw Nephilim and returning Clockspinning to your hand.
7. Repeat steps 3 through 5 one additional time.
8. Activate the Treasures by tapping and sacrificing them, adding 1.
9. Repeat.
10. You may also target any other creature you control that has a +1/+1 counter on it using Clockspinning.

This loop turns the recursive buyback of Clockspinning into a self-sustaining engine by weaving together a cascade of permanent triggers and mana generation. As you cast Clockspinning, Witch-Maw Nephilim grows with +1/+1 counters, which in turn feeds Animation Module to repeatedly birth Servo tokens. Those Servos are immediately fed to Krark-Clan Ironworks for colorless mana, while Pitiless Plunderer quietly converts each metallic death into a valuable Treasure token. With the mana from the sacrificed artifacts and Treasures fully funding the buyback cost, you can repeat the process indefinitely to amass endless power and endless triggers.