FairFamily

I have tried altering the Field, but new one always expired (even if I held Amplified Rock) before Aegislash came in, cause it was based on Grassy Terrain... Also, Will-O-Wisping it isn't possible, because it has no priority (also King's Shield protects her Aegislash even from status moves in her field, so you cannot Will-O-Wisp it off the bat, as she sets up with Swords Dance), unless you use a Sableye or something that has Prankster AND can learn Will-O-Wisp. Same goes with Haze. I could do it with Crobat, but I'd never outspeed Shadow Sneak. Unless I held Focus Sash, which isn't how I like winning battles (except for stuff like Garchomp/Dittoceus maybe).

Titania's team actually goes down relatively easily, that Aegislash though only really has 1-2 things you can do against it...

Funny I made it in burning, sweeping Titania was never so easy.  Also I just read that king shield protect against everythng so that stat erasion strategy doesn't work.

Aegislash is already a strong Pokemon, as you said this field gives it so many advantages it is kinda unfair to even try brute forcing Titania. It just isn't possible!

Maybe I just made timing mistakes with my Field... I think it would be possible, but probably I just derped out somewhere...