Spellweaver Helix + Regrowth + Emeritus of Abundance // Regrowth + Turnabout

Spellweaver Helix

Regrowth

Emeritus of Abundance // Regrowth

Turnabout

How it works

1. Cast Turnabot by paying 2, untapping at least eight lands.
2. Cast a copy of Regrowth from exile by paying 1, targeting [[Untapper]].
3. Spellweaver Helix's last ability triggers, allowing you to cast the Extra Combat Sorcery, giving you an additional combat phase and an additional main phase this turn.
4. Resolve the copy of Regrowth, returning Turnabout from your graveyard to your hand.
5. Declare Emeritus of Abundance as an attacker.
6. When Emeritus of Abundance attacks, it triggers, becoming prepared.
7. Repeat each main phase.

This intricate loop centers around Spellweaver Helix, which we use to imprint both Turnabout and Regrowth after exiling them to its enters-the-battlefield trigger. Once primed, casting Turnabout lets you tap and untap your lands to generate the necessary mana while triggering the Helix to cast a free copy of Regrowth from exile. That Regrowth recursion plucks Turnabout right back out of your graveyard to hand, allowing you to chain the loop continuously. Meanwhile, attacking with Emeritus of Abundance (and utilizing its prepared status fueled by your eight-plus lands) keeps your combat phases and main phases flowing, ensuring you have all the openings you need to recur your entire graveyard and overwhelm the table.