How can you create a combo with Marneus Calgar, Undercity Scrounger, Pemmin's Aura?
user
[START OF COMBO]This combo can be formed with Marneus Calgar, Undercity Scrounger, Pemmin's Aura

Color identity: WUB
Mana cost: 
Steps:
  1. Activate Undercity Scrounger by tapping it, creating a Treasure token.
  2. Marneus triggers, causing you to draw a card.
  3. Activate the Treasure by tapping and sacrificing it, adding {U}.
  4. Activate Pemmin's Aura's first ability by paying {U}, untapping Undercity Scrounger.
  5. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite card draw
  - Infinite draw triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Undercity Scrounger does not have summoning sickness.
  - A creature has died this turn.
  - Pemmin's Aura attached to Undercity Scrounger.
[END OF COMBO PREREQUISITES]
assistant