Stuffy Doll + With Great Power . . .

Prerequisites

You have a way to deal damage to Stuffy Doll if it has summoning sickness.

Steps

1. Deal damage to Stuffy Doll, either using its ability or another method.
2. Stuffy Doll triggers, attempting to deal damage to you, but dealing damage to Stuffy Doll instead due to With Great Power....
3. Repeat step 2 in an infinite loop, causing the game to end in a draw.