"Shadow Ball!" With the Trick Room in effect, Tachi was able to out-speed the Mega Alakazam. The Espeon conjured an orb of shadow energy and launched it at Sherlock.
"Trick Room!" Tachi was blasted, but the Espeon survived the attack thanks to the defense boosts from Calm Mind. Tachi used her psychic powers to create a zone of twisted dimensions encompassing the whole battlefield.
"Light Screen!" Tachi conjured a mirrored shield that weakened the Shadow Ball's attack before it struck. The Future Sight that Tachi saw earlier struck the Sylveon.
"Pierce it with Psyshock!" A red javelin of energy was conjured and sent at the incoming Shadow Ball, piercing it and causing an explosion complete with sparkles.