Ivy, Gleeful Spellthief + Treachery Combos

4 known combos featuring both cards in Commander

Infinite storm count Infinite mana lands you control can produce Infinite blue mana Gain control of all creatures Infinite untap of lands you control

Combo 1 with Retraction Helix + Minamo, School at Water's Edge

Results: Infinite storm count · Infinite mana lands you control can produce · Infinite blue mana · Gain control of all creatures · Infinite untap of lands you control
Steps
  1. Activate Minamo and up to four other lands you control by tapping them, adding at least {1}{U}{U}{U}.
  2. Cast Retraction Helix by paying {U}, targeting Ivy.
  3. Cast Treachery by paying {3}{U}{U}, targeting a creature other than Ivy.
  4. Ivy triggers, copying the Treachery spell, with the copy targeting Ivy.
  5. Resolve the copy of the Treachery spell, creating a copy of Treachery attached to Ivy.
  6. When the Treachery token enters the battlefield, it triggers, untapping up to five lands.
  7. Holding priority, activate up to four lands excluding Minamo by tapping them, adding at least {1}{U}{U}.
  8. Activate Minamo's second ability by paying {U} and tapping it, untapping Ivy.
  9. Resolve the original Treachery spell.
  10. When Treachery enters the battlefield, it triggers, untapping up to five lands.
  11. Activate Ivy by tapping it, returning the nontoken Treachery from the battlefield to your hand.
  12. Activate Minamo and up to four other lands you control by tapping them, adding at least {1}{U}{U}{U}.
  13. Repeat from step 3.

Combo 2 with Banishing Knack + Minamo, School at Water's Edge

Results: Infinite storm count · Infinite mana lands you control can produce · Infinite blue mana · Gain control of all creatures · Infinite untap of lands you control
Show steps
  1. Activate Minamo and up to four other lands you control by tapping them, adding at least {1}{U}{U}{U}.
  2. Cast Banishing Knack by paying {U}, targeting Ivy.
  3. Cast Treachery by paying {3}{U}{U}, targeting a creature other than Ivy.
  4. Ivy triggers, copying the Treachery spell, with the copy targeting Ivy.
  5. Resolve the copy of the Treachery spell, creating a copy of Treachery attached to Ivy.
  6. When the Treachery token enters the battlefield, it triggers, untapping up to five lands.
  7. Holding priority, activate up to four lands excluding Minamo by tapping them, adding at least {1}{U}{U}.
  8. Activate Minamo's second ability by paying {U} and tapping it, untapping Ivy.
  9. Resolve the original Treachery spell.
  10. When Treachery enters the battlefield, it triggers, untapping up to five lands.
  11. Activate Ivy by tapping it, returning the nontoken Treachery from the battlefield to your hand.
  12. Activate Minamo and up to four other lands you control by tapping them, adding at least {1}{U}{U}{U}.
  13. Repeat from step 3.

Combo 3 with Banishing Knack + Wirewood Lodge

Results: Infinite storm count · Infinite mana lands you control can produce · Infinite blue mana · Gain control of all creatures · Infinite untap of lands you control
Show steps
  1. Activate Wirewood Lodge and up to four other lands you control by tapping them, adding at least {C}{G}{U}{U}.
  2. Cast Banishing Knack by paying {U}, targeting an Elf you control without summoning sickness.
  3. Cast Treachery by paying {3}{U}{U}, targeting a creature other than Ivy.
  4. Ivy triggers, copying the Treachery spell, with the copy targeting Ivy.
  5. Resolve the copy of the Treachery spell, creating a copy of Treachery attached to Ivy.
  6. When the Treachery token enters the battlefield, it triggers, untapping up to five lands.
  7. Holding priority, activate up to four lands excluding Wirewood Lodge by tapping them, adding at least {G}{U}{U}.
  8. Activate Wirewood Lodge's second ability by paying {G} and tapping it, untapping the Elf.
  9. Resolve the original Treachery spell.
  10. When Treachery enters the battlefield, it triggers, untapping up to five lands.
  11. Activate the Elf by tapping it, returning the nontoken Treachery from the battlefield to your hand.
  12. Activate Wirewood Lodge and up to four other lands you control by tapping them, adding at least {C}{G}{U}{U}.
  13. Repeat from step 3.

Combo 4 with Retraction Helix + Wirewood Lodge

Results: Infinite storm count · Infinite mana lands you control can produce · Infinite blue mana · Gain control of all creatures · Infinite untap of lands you control
Show steps
  1. Activate Wirewood Lodge and up to four other lands you control by tapping them, adding at least {C}{G}{U}{U}.
  2. Cast Retraction Helix by paying {U}, targeting an Elf you control without summoning sickness.
  3. Cast Treachery by paying {3}{U}{U}, targeting a creature other than Ivy.
  4. Ivy triggers, copying the Treachery spell, with the copy targeting Ivy.
  5. Resolve the copy of the Treachery spell, creating a copy of Treachery attached to Ivy.
  6. When the Treachery token enters the battlefield, it triggers, untapping up to five lands.
  7. Holding priority, activate up to four lands excluding Wirewood Lodge by tapping them, adding at least {G}{U}{U}.
  8. Activate Wirewood Lodge's second ability by paying {G} and tapping it, untapping the Elf.
  9. Resolve the original Treachery spell.
  10. When Treachery enters the battlefield, it triggers, untapping up to five lands.
  11. Activate the Elf by tapping it, returning the nontoken Treachery from the battlefield to your hand.
  12. Activate Wirewood Lodge and up to four other lands you control by tapping them, adding at least {C}{G}{U}{U}.
  13. Repeat from step 3.
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