Specs Sylveon
Sylveon @ Choice Specs
Ability: Pixilate
EVs: 4 Def / 252 SpA / 252 Spe
Modest Nature
- Hyper Voice
- Psyshock
- Mystical Fire
- Shadow Ball / Quick Attack
Specs Sylveon is a known set, but if you are able to get Sylveon into battle without revealing that it doesn't have Leftovers [i.e. if hazards aren't up], the Doublade user might assume it is the common mono-attacking cleric set and come in to set up a Swords Dance.
252+ SpA Choice Specs Pixilate Sylveon Hyper Voice vs. 212 HP / 0 SpD Eviolite Doublade: 151-178 (48.3 - 57%) -- 91.8% chance to 2HKO
252+ SpA Choice Specs Sylveon Mystical Fire vs. 212 HP / 0 SpD Eviolite Doublade: 282-332 (90.3 - 106.4%) -- 43.8% chance to OHKO
252+ SpA Choice Specs Sylveon Shadow Ball vs. 212 HP / 0 SpD Eviolite Doublade: 300-354 (96.1 - 113.4%) -- 75% chance to OHKO
Even a nominally incorrect prediction, using Hyper Voice, leads to Doublade taking around 50% chip, and Sylveon can KO it (or do at least 90%) with a super-effective Mystical Fire or Shadow Ball.