Regrowth, Emeritus of Abundance // Regrowth, Pyromancer Ascension, Woe Strider, and Channel the Suns

Prerequisites

• Regrowth in the graveyard
• Emeritus of Abundance // Regrowth on the battlefield
• Pyromancer Ascension on the battlefield
• Woe Strider on the battlefield
• Channel the Suns in hand
• available

Steps

1. Cast a copy of Regrowth from exile by paying , targeting any card besides the actual Regrowth
2. Pyromancer's Ascension's first ability triggers, allowing you to put a quest counter on it
3. Resolve the copy of Regrowth, returning that card from your graveyard to your hand
4. Declare Emeritus of Abundance as an attacker
5. When Emeritus of Abundance attacks, it triggers, becoming prepared
6. During your second main phase, cast a copy of Regrowth by paying , targeting the actual Regrowth card
7. Pyromancer Ascension's first ability triggers, allowing you to put a quest counter on it
8. Resolve the copy of Regrowth, returning Regrowth from your graveyard to your hand
9. Cast Channel the Suns by paying its mana cost
10. Pyromancer Ascension's second ability triggers, copying Channel the Suns
11. Resolve both copies of Channel the Suns, adding mana
12. Activate Woe Strider by sacrificing Emeritus of Abundance, producing that card's result
13. Cast the card Regrowth from your hand by paying , targeting Emeritus of Abundance
14. Pyromancer Ascension's second ability triggers, copying Regrowth and allowing you to target Channel the Suns with the copy
15. Resolve both copies of Regrowth, returning Emeritus of Abundance and Channel the Suns from your graveyard to your hand
16. Cast Channel the Suns by paying its mana cost
17. Pyromancer Ascension's second ability triggers, copying Channel the Suns
18. Resolve both copies of Channel the Suns, adding mana
19. Cast Emeritus of Abundance by paying
20. Cast a copy of Regrowth from exile by paying , targeting Channel the Suns
21. Both of Pyromancer Ascension's abilities trigger
22. In response, activate Woe Strider by sacrificing Emeritus of Ideation, producing that card's result
23. Resolve Pyromancer Ascension's first abiliity, putting a redundant quest counter on it if desired
24. Resolve Pyromancer Ascension's second ability, copying Regrowth and targeting Emeritus of Abundance with the copy
25. Repeat from step 15

Results

• Infinite ETB
• Infinite LTB
• Infinite colored mana
• Infinite death triggers
• Infinite magecraft triggers
• Infinite sacrifice triggers
• Infinite scry 1