I would replace Leech Life with Shadow Claw on Mimikyu; having a 40 BP move as your only Ghost STAB isn't going to do you any favors. Also, I generally lean towards Adamant over Jolly on Mimikyu because he doesn't outspeed much except for uninvested tanks and such. On Aegislash, change the nature to Brave, and the EVs to 252 Atk/252 HP/4 SpD and Weakness Policy instead of Life Orb. On Aegislash, you always want to go last because you want to be able to tank a hit in Shield Form and then OHKO in Blade Form, possibly with some Swords Dance boosts, and Shadow Sneak has priority anyways. The Aegislash your running is a fast physical sweeper, which will never end well. Also, i noticed that you have no Mega or Z-Move user, and I strongly suggest you add one. You could change Gallade to
Gallade @ Galladite
Ability: Justified --> Steadfast
Shiny: Yes
EVs: 252 Spe/252 Atk/4 SpD
Jolly Nature
- Swords Dance
- Close Combat
- Zen Headbutt
- Knock Off
or add another mega like Blaziken-Mega or Salamence-Mega. Also, you didn't show your nature on Gallade, and both Aegislash and Mimikyu have Life Orb, which isn't allowed on the Battle Tree, I don't know if the Duplicate Item claws applies to Battle Royale too, but I assume it does. Anyways, I hoped I helped and good luck sweeping the Battle Tree! (P.S. The Battle Tree can hax you out of wins a lot and it's very frustrating just thought you should know)
