>>19349270Technically, a counter needs to be able to switch in on the aegislash and then kill it.
This is a highly situational calc but:
Houndoom switching in on something BESIDES Sacred Sword.
0 SpA Aegislash-Blade Shadow Ball vs. 4 HP / 0 SpD Houndoom: 74-87 (25.3 - 29.7%) -- guaranteed 4HKO
252+ Atk Aegislash-Blade Iron Head vs. 4 HP / 0 Def Houndoom: 138-163 (47.2 - 55.8%) -- 79.3% chance to 2HKO
Houndoom hitting back after an obligatory KS from Aegislash.
252 SpA Houndoom Fire Blast vs. 252 HP / 4 SpD Aegislash-Shield: 224-266 (69.1 - 82%) -- guaranteed 2HKO after Leftovers recovery
The best houndoom can do is predict the KS and will o wisp. Or run into one of the retards who don't run KS.