I have an Aegislash moveset that is sure to get it banned!
TOXIC STALLER MOVESET
Ability: Stance Change
EVs: NO SPEED / 252 Sp. Defense / 252 Defense / 4 HP
NO SPEED / evenly spread out on rest
-King's Shield (MAX PP IS A MUST!!)
So this one is a pretty dickish.
First off, in order to use this correctly, you need to know what to do and when you do it, and be able to strategist with this moveset in battle.
The goal is to incapacitate your enemies by using toxic and possibly attract (which if you can use attract, then use it first, and not to mention attract can seriously complicate things for your opponent), and then spamming king's shield, and tanking attacks in shield form and healing back up with leftovers and spamming King's Shield when needed.
It is actually GOOD if Aegislash has really low speed!!! If Aegislash goes last in a turn, then he can stance change, get out a sacred sword, and then use King's Shield next turn to stance change before the opponent can attack, effectively getting rid of any opportunity to hit Aegislash while in blade form. Also, Aegislash's shield form is so bulky that it shouldn't be a problem tanking attacks due to being slower than the opponent.
I recommend trying this one out, because it can seriously SERIOUSLY do some damage to your opponents team! And even against Pokemon that have supereffective moves against it, it is still somewhat capable of doing a number on the opponent (although in this case I'd recommend having the evs into all defense and sp. defense).