How can you create a combo with Feign Death, Mnemonic Wall, Phyrexian Altar?
user
[START OF COMBO]This combo can be formed with Feign Death, Mnemonic Wall, Phyrexian Altar

Color identity: UB
Mana cost: {B}
Steps:
  1. Cast Feign Death by paying {B}, targeting Mnemonic Wall.
  2. Activate Phyrexian Altar by sacrificing Mnemonic Wall, adding {B}.
  3. Mnemonic Wall triggers, returning itself from your graveyard to the battlefield tapped with a +1/+1 counter on it.
  4. Mnemonic Wall enters the battlefield, returning Feign Death from your graveyard to your hand.
  5. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite magecraft triggers
  - Infinite sacrifice triggers
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Feign Death must be in your hand
  - Mnemonic Wall must be on the battlefield
  - Phyrexian Altar must be on the battlefield
[END OF COMBO PREREQUISITES]
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