Spellweaver Helix, Emeritus of Woe // Demonic Tutor, Demonic Tutor, and Siege-Gang Lieutenant

Prerequisites

• Spellweaver Helix on the battlefield
• Emeritus of Woe // Demonic Tutor on the battlefield
• Demonic Tutor in exile
• Siege-Gang Lieutenant in hand or in the library
• , then each subsequent turn available

Steps

1. Cast the copy of Demonic Tutor from exile by paying , unpreparing Emeritus of Woe
2. When you cast that spell, Spellweaver Helix's last ability triggers, allowing you to cast a copy of the Extra Turn Sorcery without paying its mana cost, causing you to take an extra turn after this one
3. Resolve the copy of Demonic Tutor, finding Siege-Gang Lieutenant and putting it into your hand
4. Cast Siege-Gang Lieutenant by paying
5. At the beginning of combat, Siege-Gang Lieutenant's first ability triggers, creating two 1/1/ red Goblin creature tokens with haste
6. Activate Siege-Gang Lieutenant's last ability twice by paying and sacrificing both Goblin tokens, dealing 2 damage to any target
7. At the beginning of your end step, Emeritus of Woe triggers, preparing itself
8. Repeat each turn, finding any card of your choice in step 4 instead of Siege-Gang Lieutenant

Results

• Infinite turns
• Lock