Life and Limb + Maskwood Nexus + Scute Swarm

Life and Limb

Maskwood Nexus

Scute Swarm

How it works

1. Play any land.
2. When the land enters the battlefield, each Scute Swarm you control triggers.
3. Resolve the first trigger, creating either a 1/1 Insect creature token or a token copy of Scute Swarm.
4. When the creature token enters the battlefield as a 1/1 Saproling that is also a Forest land due to Life and Limb and Maskwood Nexus, each Scute Swarm you control triggers.
5. Repeat from step 3.
6. NOTE: This combo creates an infinite mandatory loop that will draw the game if it is not interacted with.

This loop turns a simple land drop into an endlessly compounding swarm by turning your tokens into lands, which in turn trigger more tokens. With Maskwood Nexus in play making every creature you own every type, every creature token that enters the battlefield is also recognized as a Saproling and a Forest thanks to Life and Limb. Because those tokens are now lands, their very arrival triggers Scute Swarm all over again to make another token copy, which also enters as a Forest land and perpetuates the cycle. Since this creates a mandatory loop with no optional out, it will inevitably draw the game unless someone interrupts the avalanche of triggers.