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

Color identity: UR
Mana cost: 
Steps:
  1. Activate Krark-Clan Ironworks by sacrificing Sword of the Meek, adding {C}{C}.
  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. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite leaves the battlefield
  - Infinite enters the battlefield
  - Infinite sacrifice triggers
  - Infinite death triggers
  - 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