How can you create a combo with Saheeli, the Sun's Brilliance, Umbral Mantle, Peregrine Drake?
user
[START OF COMBO]This combo can be formed with Saheeli, the Sun's Brilliance, Umbral Mantle, Peregrine Drake

Color identity: UR
Mana cost: 
Steps:
  1. Activate up to five lands by tapping them, adding at least {3}{U}{R}.
  2. Activate Saheeli by paying {U}{R} and tapping it, creating a token copy of Peregrine Drake with haste.
  3. When the token Peregrine Drake enters the battlefield, it triggers, untapping up to five lands.
  4. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite creature tokens with haste
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Umbral Mantle attached to Saheeli.
  - Saheeli does not have summoning sickness.
  - You control up to five lands that can tap to produce at least {3}{U}{R}.
[END OF COMBO PREREQUISITES]
assistant