Counter re-procs with Giant Slayer
I've noticed that characters with counter will often be attacked twice in a row when Giant Slayer procs.
How to re-create
Both characters have counter attack buff lets say my Exe and opponents Martyr
My Exe has Giant Slayer mastery (GS)
Martyrs turn, she attacks Exe (both have counter attack buffs present)
Exe counters her attack by hitting back, his hit also procs GS for extra damage
after his attack Martyr attacks him again before turn meters begin to refill.
*Turn Meter Freeze* Martyr > Exe > Martyr *Turn Meter resumes*I believe the game calculates GS as a separate attack, not part of the initial counter and therefore the attacking champion gets to retaliate to an attack they initiated