How can you create a combo with Priest of Urabrask, Blade of Selves, Leyline Tyrant, Aggravated Assault?
user
[START OF COMBO]This combo can be formed with Priest of Urabrask, Blade of Selves, Leyline Tyrant, Aggravated Assault

Color identity: R
Mana cost: 
Steps:
  1. Declare Priest of Urabrask as an attacker.
  2. Priest of Urabrask' myriad ability triggers, creating at least two token copies of it that are tapped and attacking.
  3. The Priest of Urabrask tokens enter the battlefield, adding at least six {R}.
  4. At the end of your combat phase, Blade of Selves triggers, exiling the Priest of Urabrask tokens.
  5. Move to your postcombat main phase.
  6. Activate Aggravated Assault by paying {3}{R}{R}, causing you to untap all creatures you control and to get an additional combat and main phase after this one.
  7. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite combat phases
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite mana creatures you control can produce
  - Infinite red mana
  - Infinite untap of creatures you control[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Blade of Selves attached to Priest of Urabrask.
  - Priest of Urabrask does not have summoning sickness.
  - You have at least two opponents.
  - An opponent is unable to block and kill Priest of Urabrask.
[END OF COMBO PREREQUISITES]
assistant