I personally really liked Titania ! I'm not an expert in any way and my pokemons aren't perfected at all, relying mostly on quick and heavy hits. First and second time I went in I got my whole team swept by that insanely fast sandslash ! And none of my pokemon could truly match hers. So I had to develop my strategy to kill each of her pokemon accordingly to how she brought them in a pattern. I used a freshly caught, completely untrained steelix to create a sandstorm and neutralize sandslash. I then brought my delphox for the first turn of escadrill, and change as soon for arcanine with magical seed, countering escadrill's own magical seed and killing him in one fare blitz. I rekt scizor in one hit with my delphox, and then came mother fucking klefki. If I remember well, I was lucky enough for my mismagius to kill him in two hits. Then I sent in leafeon with a magical seed, one turn protected to use sword dance, then dig to OHKO empoleon and aegiglash (a bit of luck was needed here too to cause he went king guard before I hit him I was done).
Long story short, it was the first time I spent so much time studying the effects of the field, and when I understood the power of the magical seeds...damn !
On the other hand, I beat Amaria quite pathetically. The field was hell, I didn't manage to freeze it. I beat her pokemon out of luck, and was left facing her lapras with my cradily, each one quite unable to truly hurt the other and I got her slowly (same thing had happen against adrienn, my sylveon winning painfully. When you're not well prepared and you win, it sometimes let quite a deceptive taste ahah
