How can you create a combo with Skittering Precursor, Sword of the Meek, Ruination Guide, Grinding Station?
user
[START OF COMBO]This combo can be formed with Skittering Precursor, Sword of the Meek, Ruination Guide, Grinding Station

Color identity: UR
Mana cost: 
Steps:
  1. Activate Grinding Station by tapping it and sacrificing Sword of the Meek.
  2. Skittering Precursor triggers, creating a 0/1 Eldrazi Spawn creature token.
  3. When the Eldrazi Spawn enters the battlefield as a 1/1 due to Ruination Guide, Sword of the Meek triggers, returning Sword of the Meek from your graveyard to the battlefield attached to the Eldrazi Spawn.
  4. When Sword of the Meek enters the battlefield, Grinding Station triggers, untapping Grinding Station.
  5. Resolve the Grinding Station ability from step 1, causing target player to mill three cards.
  6. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite leaves the battlefield
  - Infinite enters the battlefield
  - Infinite sacrifice triggers
  - Infinite death triggers
  - Infinite mill
  - Infinite self-mill
  - Infinite colorless mana
  - Infinite creature tokens[END OF COMBO RESULT][END OF COMBO]

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