Cast Dragon's Approach by paying {2}{R}.
Spellweaver Helix triggers, causing you to cast a copy of Coveted Prize without paying its mana cost.
Resolve the copy of Coveted Prize, causing you to search your library for a Dragon's Apporach and put it into your hand, and then cast Dragon's Approach without paying its mana cost.
Repeat from step 2 until you have cast every Dragon's Approach in your library.
Resolve a Dragon's Approach, dealing 3 damage to each opponent, and allowing you to exile it and four other cards named Dragon's Approach from your graveyard to search your library for a Dragon creature card and put it onto the battlefield.
Repeat step 5 for each remaining Dragon's Approach.

Cast every Dragon's Approach in your library and hand without paying their mana costs

Near-infinite damage

Near-infinite magecraft triggers

Near-infinite storm count

Spellweaver Helix

Dragon's Approach

Coveted Prize

Cast the non-card copy of the spell from exile by paying its mana cost, unpreparing Joined Researchers.
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 and take an extra turn after this one.
Resolve the spell from step 1.
At the beginning of the end step, Joined Researchers triggers, becoming prepared.
Repeat each turn.

Extra Turn Sorcery

Card with same name as prepare spell

Joined Researchers // Secret Rendezvous

Cast the non-card copy of the spell in exile by paying its mana cost, unpreparing Spellbook Seeker // Careful Study.
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 and take an extra turn after this one.
Resolve the spell from step 1.
Activate Deadeye Navigator by paying mana, flickering Spellbook Seeker // Careful Study, which enters prepared.
Repeat each turn.

Infinite turns

Lock

Deadeye Navigator

Spellbook Seeker // Careful Study

Cast the non-card copy of Sign in Blood from exile by paying {B}{B}, unpreparing Scheming Silvertongue.
When you cast it, Spellweaver Helix's last ability triggers, allowing you to cast a copy of the Extra Turn Sorcery without paying its mana cost and take an extra turn after this one.
Resolve the copy of Sign in Blood, causing any player to draw two cards and lose 2 life.
Use the Repeatable Silvertongue Preparer to gain at least 2 life.
At the beginning of your second main phase, Scheming Silvertongue triggers, becoming prepared.
Repeat each turn.

Repeatable Silvertongue Preparer

Scheming Silvertongue // Sign in Blood

Sign in Blood

Cast the non-card copy of Sign in Blood from exile by paying {B}{B}, unpreparing Scheming Silvertongue.
When you cast it, Spellweaver Helix's last ability triggers, allowing you to cast a copy of the Extra Turn Sorcery without paying its mana cost and take an extra turn after this one.
Resolve the copy of Sign in Blood, causing an opponent to draw two cards and lose two life.
When your opponent loses life, Bloodthirsty Conqueror triggers, causing you to gain 2 life.
At the beginning of your second main phase, Scheming Silvertongue triggers, becoming prepared.
Repeat each turn.

Bloodthirsty Conqueror

Cast Petals of Insight by paying {3}{U}.
When you cast this, Dirgur Focusmage triggers, becoming prepared.
Resolve Petals of Insight, returning it to your hand
Cast the prepared copy of Braingeyser from exile by paying {U}{U} and unpreparing Dirgur Focusmage
When you cast Braingeyser, Spellweaver Helix triggers, casting a copy of the Extra Turn Sorcery, causing you to gain an extra turn after this one.
Resolve the copy of Braingeyser, causing target player to draw one card.
Repeat each turn.

Dirgur Focusmage // Braingeyser

Braingeyser

Petals of Insight

Cast a copy of Wheel of Fortune from exile by paying {2}{R}, unpreparing Naktamun Lorespinner.
Spellweaver Helix's last ability triggers, allowing you to cast a copy of the Extra Turn Sorcery without paying its mana cost, gaining an extra turn after this one.
Resolve the copy of Wheel of Fortune, causing each player to discard their hand; at least one player fails to draw more than one card due to the Draw Hate effect.
At the beginning of your next extra turn, Nakatmun Lorespinner triggers, becoming prepared.
Repeat.

Draw Hate

Naktamun Lorespinner // Wheel of Fortune

Wheel of Fortune

Cast a copy of Wheel of Fortune from exile by paying {2}{R}, unpreparing Naktamun Lorespinner.
Spellweaver Helix's last ability triggers, allowing you to cast a copy of the Extra Turn Sorcery without paying its mana cost, gaining an extra turn after this one.
Resolve the copy of Wheel of Fortune, causing each player to discard their hand and draw seven cards.
Activate your Free Discard Outlet until you have one card in hand.
At the beginning of your next extra turn, Nakatmun Lorespinner triggers, becoming prepared.
Repeat.

Free Discard Outlet

Cast Early Harvest by paying its mana cost, untapping at least five basic lands.
Cast a copy of Regrowth from exile by paying {1}{G}, targeting Early Harvest.
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.
Resolve the copy of Regrowth, returning Early Harvest from your graveyard to your hand.
Declare Emeritus of Abundance as an attacker.
When Emeritus of Abundance attacks, it triggers, becoming prepared.
Repeat each main phase.

Infinite combat phases

Infinite magecraft triggers

Extra Combat Sorcery

Regrowth

Emeritus of Abundance // Regrowth

Early Harvest

Cast the copy of Demonic Tutor from exile by paying {1}{B}, unpreparing Emeritus of Woe.
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.
Resolve the copy of Demonic Tutor, finding Siege-Gang Lieutenant and putting it into your hand.
Cast Siege-Gang Lieutenant by paying {3}{R}.
At the beginning of combat, Siege-Gang Lieutenant's first ability triggers, creating two 1/1/ red Goblin creature tokens with haste.
Activate Siege-Gang Lieutenant's last ability twice by paying {4} and sacrificing both Goblin tokens, dealing 2 damage to any target.
At the beginning of your end step, Emeritus of Woe triggers, preparing itself.
Repeat each turn, finding any card of your choice in step 4 instead of Siege-Gang Lieutenant.

Emeritus of Woe // Demonic Tutor

Demonic Tutor

Siege-Gang Lieutenant

Cast the prepared copy of Reanimate from exile by paying {B}, unpreparing Grave Researcher.
When you cast this, Spellweaver Helix triggers, allowing you to cast a copy of the Extra Turn Sorcery, causing you to gain an extra turn after this one.
Resolve the copy of Reanimate, returning Children of Korlis from your graveyard to the battlefield and losing 1 life.
Activate Children of Korlis by sacrificing it, gaining 1 life.
At the beginning of your extra turn's upkeep, Grave Researcher triggers, allowing you to surveil 1 and prepare it.
Repeat.

Grave Researcher // Reanimate

Reanimate

Children of Korlis

Cast Brass's Bounty by paying its mana cost, creating at least nine Treasure tokens.
Activate two of those Treasure tokens by tapping and sacrificing them, adding two mana.
Cast a copy of Regrowth from exile by paying {1}{G}, targeting Brass's Bounty.
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.
Resolve the copy of Regrowth, returning Brass's Bounty from your graveyard to your hand.
Declare Emeritus of Abundance as an attacker.
When Emeritus of Abundance attacks, it triggers, becoming prepared.
During your next main phase, activate seven Treasure tokens by tapping and sacrificing them, adding seven mana.
Repeat each main phase.

Combos with "Spellweaver Helix"