How can you create a combo with Lier, Disciple of the Drowned, Merfolk Secretkeeper // Venture Deeper, Phyrexian Altar, Desecrated Tomb?
user
[START OF COMBO]This combo can be formed with Lier, Disciple of the Drowned, Merfolk Secretkeeper // Venture Deeper, Phyrexian Altar, Desecrated Tomb

Color identity: U
Mana cost: 
Steps:
  1. Activate Phyrexian Altar by sacrificing Merfolk Secretkeeper, adding {U}.
  2. Cast Venture Deeper for its flashback cost by paying {U}, causing target player to mill four cards, then exile Merfolk Secretkeeper.
  3. Desecrated Tomb triggers, creating a 1/1 Bat token.
  4. Activate Phyrexian Altar by sacrificing a Bat token, adding {U}.
  5. Cast Merfolk Secretkeeper from exile by paying {U}.
  6. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite creature tokens
  - Infinite mill
  - Infinite sacrifice triggers
  - Infinite colored mana[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
assistant