Veyran, Voice of Duality, Birgi, God of Storytelling // Harnfel, Horn of Bounty, Storm-Kiln Artist, and Seething Anger

Prerequisites

• Veyran, Voice of Duality on the battlefield
• Birgi, God of Storytelling // Harnfel, Horn of Bounty on the battlefield
• Storm-Kiln Artist on the battlefield
• Seething Anger in hand
• available

Steps

1. Cast Seething Anger with buyback by paying
2. Storm-Kiln Artist, Veyran and Birgi trigger twice each
3. Resolve both Birgi triggers, adding
4. Resolve both Storm-Kiln Artist triggers, creating two Treasure artifact tokens
5. Resolve both Veyran triggers, giving it +2/+2 until end of turn
6. Resolve Seething Anger, giving target creature +3/+0 and returning Seething Anger to your hand
7. Activate the Treasures by tapping and sacrificing them, adding
8. Repeat

Results

• Infinitely large Veyran until end of turn
• Infinitely powerful creatures until end of turn
• Infinite magecraft triggers
• Infinite proliferate
• Infinite storm count