How can you create a combo with Sliver Queen, Mana Echoes?
user
[START OF COMBO]This combo can be formed with Sliver Queen, Mana Echoes

Color identity: WUBRG
Mana cost: {2}
Steps:
  1. Activate Sliver Queen by paying {2}, creating a 1/1 Sliver creature token.
  2. When the Sliver enters the battlefield, Mana Echoes triggers, adding {C} for each Sliver you control.
  3. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana
  - Infinite creature tokens
  - Infinite enters the battlefield[END OF COMBO RESULT][END OF COMBO]

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