Haunted Crossroads + Phyrexian Altar Combos

7 known combos featuring both cards in Commander

Infinite death triggers Infinite ETB Infinite LTB Infinite sacrifice triggers Infinite storm count

Combo 1 with Etali, Primal Conqueror // Etali, Primal Sickness

Results: Cast any number of spells from opponents' libraries · Exile each opponent's library · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite sacrifice triggers · Infinite storm count · Near-infinite magecraft triggers
Steps
  1. Cast Etali by paying {5}{R}{R}.
  2. When Etali enters the battlefield, it triggers.
  3. Holding priority, activate Phyrexian Altar by sacrificing Etali, adding {B}.
  4. Activate Haunted Crossroads by paying {B}, putting Etali on top of your library from your graveyard.
  5. Resolve the Etali trigger from step 2, causing you to exile cards from each player's library until you exile a nonland card, with you exiling Etali from your library, and cast Etali and any other nonland cards exiled this way without paying their mana costs.
  6. Repeat from step 2.

Combo 2 with Matter Reshaper

Also requires: Matter Reshaper Matter Reshaper
Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite sacrifice triggers
Show steps
  1. Sacrifice Matter Reshaper to Phyrexian Altar, adding {B}.
  2. With Matter Reshaper's trigger on the stack, activate Haunted Crossroads by paying {B}, putting Matter Reshaper from your graveyard on top of your library.
  3. Resolve Matter Reshaper's trigger, revealing Matter Reshaper on top of your library, and putting it on the battlefield.
  4. Repeat.

Combo 3 with Rakdos, the Muscle + Priest of Gix

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite storm count · Exile your library with the ability to play the exiled cards until your next turn
Show steps
  1. Activate Phyrexian Altar by sacrificing Priest of Gix, adding {B}.
  2. When Priest of Gix dies, Rakdos triggers.
  3. Holding priority, activate Haunted Crossroads by paying {B}, putting Priest of Gix from your graveyard onto the top of your library.
  4. Resolve the Rakdos trigger, causing you to exile the top three cards of your library with the ability to play them until your next end step.
  5. Cast Priest of Gix from exile by paying {3}.
  6. When Priest of Gix enters the battlefield, it triggers, adding {B}{B}{B}.
  7. Repeat.

Combo 4 with Rakdos, the Muscle + Greedy Freebooter

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite scry 1 · Infinite storm count
Show steps
  1. Activate Phyrexian Altar by sacrificing Greedy Freebooter, adding {1}.
  2. When Greedy Freebooter dies, it and Rakdos trigger.
  3. Resolve the Greedy Freebooter trigger, creating a Treasure token and causing you to scry 1.
  4. Activate the Treasure by tapping and sacrificing it, adding {B}.
  5. Holding priority, activate Haunted Crossroads by paying {B}, putting Greedy Freebooter from your graveyard onto the top of your library.
  6. Resolve the Rakdos trigger, exiling Greedy Freedbooter from the top of your library with the ability to cast it until your next turn.
  7. Cast Greedy Freebooter from exile by paying {1}.
  8. Repeat.

Combo 5 with Rakdos, the Muscle + Shambling Ghast

Results: Infinite LTB · Infinite ETB · Infinite sacrifice triggers · Infinite death triggers · Infinite storm count
Show steps
  1. Activate Phyrexian Altar by sacrificing Shambling Ghast, adding {1}.
  2. When Shambling Ghast dies, it and Rakdos trigger.
  3. Resolve the Shambling Ghast trigger, creating a Treasure token.
  4. Activate the Treasure by tapping and sacrificing it, adding {B}.
  5. Holding priority, activate Haunted Crossroads by paying {B}, putting Shambling Ghast from your graveyard onto the top of your library.
  6. Resolve the Rakdos trigger, exiling Shambling Ghast from the top of your library with the ability to cast it until your next turn.
  7. Cast Shambling Ghast from exile by paying {1}.
  8. Repeat.

Combo 6 with Verdant Succession

Also requires: Verdant Succession Verdant Succession
Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite sacrifice triggers
Show steps
  1. Activate Phyrexian Altar by sacrificing a nontoken green creature, adding {B}.
  2. When the creature dies, Verdant Succession triggers.
  3. Holding priority, activate Haunted Crossroads by paying {B}, putting the creature on top of your library from your graveyard.
  4. Resolve the Verdant Succession trigger, putting the creature from your library onto the battlefield.
  5. Repeat.

Combo 7 with Galadriel of Lothlórien + Dryad Arbor + Retreat to Coralhelm

Also requires: Galadriel of Lothlórien Galadriel of Lothlórien Dryad Arbor Dryad Arbor Retreat to Coralhelm Retreat to Coralhelm
Results: Infinite death triggers · Infinite ETB · Infinite landfall triggers · Infinite LTB · Infinite sacrifice triggers
Show steps
  1. Play Dryad Arbor.
  2. When Dryad Arbor enters the battlefield, Retreat to Coralhelm triggers.
  3. Holding priority, activate Phyrexian Altar by sacrificing Dryad Arbor, adding {B}.
  4. Activate Haunted Crossroads by paying {B}, putting Dryad Arbor on top of your library from your graveyard.
  5. Resolve the Retreat to Coralhelm trigger from step 2, causing you to scry 1, ensuring to leave Dryad Arbor on top of your library.
  6. Galadriel's second ability triggers, causing you to reveal Dryad Arbor from the top of your library, and put it onto the battlefield tapped.
  7. Repeat from step 2.
📚 Learn more:
Buy Haunted Crossroads on TCGPlayer Buy on Amazon

As an Amazon Associate and TCGPlayer affiliate I earn from qualifying purchases.

Buy Phyrexian Altar on TCGPlayer Buy on Amazon

As an Amazon Associate and TCGPlayer affiliate I earn from qualifying purchases.