Cast Saw in Half by paying 2, destroying Verdurous Gearhulk and creating four token copies of it with base power equal to half the destroyed creature's power and base toughness equal to half the destroyed creature's toughness, rounding up each time.
When the Verdurous Gearhulk tokens enter the battlefield, they trigger, putting at least nine +1/+1 counters on Nested Shambler, and the remaining seven +1/+1 counters on any creature(s) you control.
Kill Nested Shambler, triggering its ability, creating at least twenty 1/1 Squirrel creature tokens.
At the beginning of your next upkeep, Epic Struggle triggers, causing you to win the game.
This explosive win condition relies on multiplying creature tokens and their stats to rapidly overwhelm the board for a sudden victory. By targeting Verdurous Gearhulk with Saw in Half, you slash its stats in half while creating multiple token copies that flood the battlefield with massive counter distribution triggers. These counters are piled onto Nested Shambler to skyrocket its power, which in turn supercharges its death trigger to flood the board with Squirrels—especially when doubled by Mondrak, Glory Dominus and its token-doubling replacement effect. With the critical mass of creatures secured, Epic Struggle simply triggers on your next upkeep to seal the win.