When green Yasuo attacks and uses his ability, does blue Ahri's -2 might (unit) and -1 might (legend) affect him before he strikes, or only after for the showdown combat?

Ruling: Yasuo will strike for 3 might (6 base -2 from unit Ahri -1 from legend Ahri). Ahri's abilities resolve before Yasuo's strike because of active player ordering rules.

Sequence:

• Both Yasuo's ability and Ahri's abilities trigger on attack
• Active player (Yasuo's controller) puts their triggers on the chain first
• Non-active player (Ahri's controller) puts their triggers on the chain next
• Chain resolves in reverse order, so Ahri's abilities resolve first
• Yasuo then strikes with the might penalties already applied
• If Ahri survives, the showdown continues with Yasuo still at reduced might