When Yasuo moves to an open battlefield via Yasuo Unforgiven, triggers a showdown, and then the player uses Charm, does the player have attacker/defender designations during the showdown and what happens after Charm?

Ruling: Attacker and defender designations only exist during a single combat and reset at the end of each combat. During the open showdown (after Yasuo moves to an open battlefield), no attacker/defender designations exist because no combat took place. When you use Charm after the showdown, a new combat begins and new designations are assigned - the charmed unit will be the attacker since they are contesting the battlefield you control.

Sequence:

  • Yasuo moves to open battlefield via Yasuo Unforgiven
  • Showdown resolves (no attacker/defender designations exist)
  • Charm is used
  • New combat begins with charmed unit as attacker

Nuances:

  • Attacker and defender designations fall off at the end of each combat
  • Open showdowns do not create attacker/defender designations because no combat occurs