Fervor + Phyrexian Altar Combos

9 known combos featuring both cards in Commander

Infinite death triggers Infinite LTB Infinite sacrifice triggers Infinite ETB Infinite colored mana

Combo 1 with Slimefoot and Squee + Bloom Tender

Results: Infinite colored mana · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite sacrifice triggers
Steps
  1. Activate Bloom Tender by tapping it, adding at least {B}{R}{G}.
  2. Activate Phyrexian Altar twice by sacrificing Bloom Tender and Slimefoot and Squee, adding two mana of any color(s).
  3. Activate Slimefoot and Squee by paying {1}{B}{R}{G} and sacrificing a Saproling, returning Slimefoot and Squee and Bloom Tender to the battlefield from your graveyard.
  4. When Slimefoot and Squee enters the battlefield, it triggers, creating a 1/1 Saproling creature token.
  5. Repeat.

Combo 2 with Selvala, Heart of the Wilds + Slimefoot and Squee

Results: Infinite LTB · Infinite ETB · Infinite colored mana · Infinite sacrifice triggers · Infinite death triggers
Show steps
  1. Activate Phyrexian Altar by sacrificing Slimefoot and Squee, adding {G}.
  2. Activate Selvala by paying {G} and tapping it, adding at least {B}{R}{G}.
  3. Activate Phyrexian Altar by sacrificing Selvala, adding {1}.
  4. Activate Slimefoot and Squee by paying {1}{B}{R}{G} and sacrificing a Saproling, returning it and Selvala from your graveyard to the battlefield.
  5. When Slimefoot and Squee enters the battlefield, it triggers, creating a 1/1 Saproling creature token.
  6. Repeat.

Combo 3 with Doomed Necromancer + Gixian Puppeteer

Results: Infinite death triggers · Infinite ETB · Infinite LTB · Infinite sacrifice triggers
Show steps
  1. Activate Phyrexian Altar by sacrificing Gixian Puppeteer, adding {B}.
  2. When Gixian Puppeteer dies, its second ability triggers, returning Doomed Necromancer from your graveyard to the battlefield.
  3. Activate Doomed Necromancer by paying {B}, tapping and sacrificing it, returning Gixian Puppeteer from your graveyard to the battlefield.
  4. Repeat.

Combo 4 with Jegantha, the Wellspring + Horde of Notions

Results: Infinite LTB · Infinite ETB · Infinite colored mana · Infinite sacrifice triggers · Infinite death triggers · Infinite storm count · Infinite recursion of Elemental cards in your graveyard
Show steps
  1. Activate Jegantha by tapping it, adding {W}{U}{B}{R}{G} that cannot be spent to pay generic mana costs.
  2. Activate Phyrexian Altar by sacrificing Jegantha.
  3. Activate Horde of Notions by paying {W}{U}{B}{R}{G}, causing you to cast Jegantha from your graveyard without paying its mana cost.
  4. Repeat.

Combo 5 with Ghired, Mirror of the Wilds + Atla Palani, Nest Tender

Results: Near-infinite ETB · Near-infinite LTB · Near-infinite colored mana · Near-infinite death triggers · Near-infinite sacrifice triggers · Put all creature cards from your library onto the battlefield tapped
Show steps
  1. Activate Atla by paying {2} and tapping it, creating an 0/1 Egg creature token with defender.
  2. Activate Ghired by tapping a nontoken creature you control, creating a copy of the Egg token.
  3. Activate Phyrexian Altar by sacrificing an Egg token.
  4. When the Egg dies, Atla triggers, causing you to reveal cards from the top of your library until you reveal a creature card and put it onto the battlefield.
  5. Repeat from step 2.

Combo 6 with Necrotic Ooze + Endling + Fain, the Broker

Results: Infinite colored mana · Infinite creature tokens with haste · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite sacrifice triggers · Infinite Treasure tokens · Infinite +1/+1 counters on creatures you control
Show steps
  1. Activate Necrotic Ooze using Endling's third ability by paying {B}, giving Necrotic Ooze undying until end of turn.
  2. If Necrotic Ooze has any +1/+1 counters, activate it using Fain's second ability by tapping it and removing a +1/+1 counter from it, creating a Treasure token.
  3. Activate Phyrexian Altar by sacrificing Necrotic Ooze, adding {B}.
  4. Necrotic Ooze dies, triggering its undying ability, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
  5. Repeat an arbitrarily large number of times.
  6. Activate Necrotic Ooze using Fain's third ability by tapping it and sacrificing a Treasure token, creating a 2/1 Inkling creature token.
  7. Activate four Treasure tokens by tapping and sacrificing them, adding {3}{B}.
  8. Activate Necrotic Ooze using Fain's fourth ability by paying {3}{B}, untapping it.
  9. Repeat from step 6.
  10. You may also use the infinite Inkling tokens to use Fain's first ability for infinite +1/+1 counters.

Combo 7 with Rith, the Awakener + Breath of Fury

Results: Infinite colored mana · Infinite ETB · Infinite LTB · Infinite combat damage · Infinite combat phases · Infinite death triggers · Infinite mana creatures you control can produce · Infinite sacrifice triggers · Infinite untap of creatures you control · Infinite creature tokens with haste
Show steps
  1. Deal combat damage using Rith and the creature with Breath of Fury attached, triggering Rith and Breath of Fury.
  2. Resolve the Rith trigger, causing you to pay {2}{G} to create at least four 1/1 Saproling creature tokens.
  3. Resolve the Breath of Fury trigger, causing you to sacrifice the creature it is attached to, then attach Breath of Fury to a Saproling token, then causing you to untap all creatures you control and to get an additional combat phase after this one.
  4. Move to your next combat phase, and deal combat damage using Rith and the creature with Breath of Fury attached, triggering Rith and Breath of Fury.
  5. Holding priority, activate Phyrexian Altar three times by sacrificing three Saprolings, adding {2}{G}.
  6. Repeat from step 2.

Combo 8 with Lore Drakkis + Cloudstone Curio + Awaken the Woods

Results: Infinite colored mana · Infinite death triggers · Infinite ETB · Infinite Forest tokens · Infinite landfall triggers · Infinite LTB · Infinite magecraft triggers · Infinite sacrifice triggers · Infinite storm count · Infinite creature tokens with haste
Show steps
  1. Cast Awaken the Woods by paying {6}{G}{G}, creating six 1/1 Forest Dryad land creature tokens.
  2. The Forest Dryads enter the battlefield, triggering Cloudstone Curio six times.
  3. Resolve the first Cloudstone Curio trigger, returning Lore Drakkis from the battlefield to your hand.
  4. Resolve all remaining Cloudstone Curio triggers, choosing to return nothing to your hand.
  5. Activate all Forest Dryads by tapping them, adding six {G}.
  6. Activate Phyrexian Altar four times by sacrificing four Forest Dryads, adding {2}{U/R}{U/R}.
  7. Cast Lore Drakkis for its mutate cost by paying {U/R}{U/R}, mutating it on top of a Forest Dryad.
  8. Lore Drakkis triggers, returning Awaken the Woods from your graveyard to your hand.
  9. Repeat.

Combo 9 with Enduring Vitality + Zur, Eternal Schemer

Results: Infinite LTB · Infinite sacrifice triggers · Infinite death triggers
Show steps
  1. If Enduring Vitality is not a creature, activate Zur by paying {1}{W}, causing Enduring Vitality to become a creature.
  2. Activate Enduring Vitality by tapping it, adding {W}.
  3. Activate Phyrexian Altar by sacrificing Enduring Vitality, adding {1}.
  4. When Enduring Vitality dies, it triggers, returning itself from your graveyard to the battlefield as an enchantment.
  5. Repeat.
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