>>14585242Using King's Shield switches it to Shield form, which makes it's defenses go through the roof.
Coupled in with the fact that it's a priority move that also reduces the enemy's attack by 2 stages, it's basically a big fuck you.
You can then use a physical attack on the next turn which will probably go last because of Aegislash's slow speed, so you still have the huge defenses until it attacks.
