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

Spellweaver Helix

Emeritus of Woe // Demonic Tutor

Demonic Tutor

Siege-Gang Lieutenant

How it works

1. Cast the copy of Demonic Tutor from exile by paying 1, 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 3.
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 4 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.