How can you create a combo with Marrow-Gnawer, Thornbite Staff, Ayara, First of Locthwain?
user
[START OF COMBO]This combo can be formed with Marrow-Gnawer, Thornbite Staff, Ayara, First of Locthwain

Color identity: B
Mana cost: 
Steps:
  1. Tap Marrow-Gnawer, sacrifice another rat, to create 2 1/1 Rat tokens.
  2. Thornbite Staff triggers, untapping Marrow-Gnawer.
  3. Ayara triggers, causing each opponent to lose 2 life and gaining you 2 life.
  4. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite creature tokens
  - Infinite enters the battlefield
  - Infinite lifegain
  - Infinite lifeloss
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Thornbite Staff attached to Marrow-Gnawer.
  - Marrow-Gnawer does not have summoning sickness.
  - You control at least two additional Rats.
[END OF COMBO PREREQUISITES]
assistant