Ashaya, Soul of the Wild, Blossoming Tortoise, and Misery's Shadow

Prerequisites

• Ashaya, Soul of the Wild on the battlefield
• Blossoming Tortoise on the battlefield
• Misery's Shadow on the battlefield

Steps

1. Activate Misery's Shadow by paying due to Blossoming Tortoise, giving Misery's Shadow +1/+1 until end of turn
2. Repeat

Results

• Infinitely large Misery's Shadow until end of turn