The appeal works great if performed first. Earn +2 if the Pokémon performs first in the turn. Works great if the user goes first this turn.

Is aerial ace a good move?

Aerial Ace is a move that would help with this, as it never misses. It also has a respectable base power of 60, which means it's worth using regardless.

What is the move aerial ace?

Aerial Ace is a Flying-type move introduced in Generation III that is unaffected by Accuracy and/or Evasion modifications. It was TM40 from Generation III to Pokémon Ultra Sun and Ultra Moon.