Sprout Swarm, Anointed Procession, Doubling Season, and Primal Vigor

Prerequisites

• Sprout Swarm in hand
• Anointed Procession on the battlefield
• Doubling Season on the battlefield
• Primal Vigor on the battlefield
• available

Steps

1. Cast Sprout Swarm with buyback for , creating eight 1/1 green Saproling token
2. Cast Sprout Swarm with buyback, tapping five green 1/1 Saproling tokens to pay for it using convoke
3. Repeat from step 2

Results

• Infinite creature tokens
• Infinite ETB
• Infinite magecraft triggers
• Infinite storm count