How can you create a combo with Koll, the Forgemaster, Blood Pet, Sai of the Shinobi?
user
[START OF COMBO]This combo can be formed with Koll, the Forgemaster, Blood Pet, Sai of the Shinobi

Color identity: RWB
Mana cost: 
Steps:
  1. Activate Blood Pet by sacrificing it, adding {B}.
  2. When Blood Pet dies, Koll triggers, returning Blood Pet from your graveyard to your hand.
  3. Cast Blood Pet by paying {B}.
  4. When Blood Pet enters the battlefield, Sai of the Shinobi triggers, attaching itself to Blood Pet.
  5. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Sai of the Shinobi attached to Blood Pet.
[END OF COMBO PREREQUISITES]
assistant