Does Master Yi's legendary defender +2 ability apply when Yasuo uses his ability against a defender?

Ruling: Yes, Master Yi's +2 applies when he is the defender and is alone. The +2 is a passive ability that is active at all times when the unit has defender designation.

Sequence:

• Master Yi must be designated as a defender
• Master Yi must be alone
• The +2 is then active during Yasuo's ability resolution

Nuances:

• The +2 only applies if Master Yi is alone