Please note this is a very rough draft with my thoughts after brief inspection. I know it sucks so don't hate on me.
Rotom-C
1. Remove Rain Dance set
2. Counters and Checks: Add Escavalier as a check for sets that lack HP fire
3. Revamp: No
Sceptile
1. Mention HP Fire in Additional Comments for Escavalier
2. Counters and Checks: Add Escavalier as a check
3. Revamp: No
Sigilyph
1. Slash tinted lens as an ability on the offensive set and slash heat wave after hp fighting
2. Counters and Checks: Escavalier checks the special set
3. Revamp: No
Smeargle
1. I would personally drop the trickroom set but I have seen it used successfully so I don't know
2. Checks and Counters: No changes
3. Revamp: No
Spiritomb
1. Sets seem fine
2. Checks and Counters: Escavalier walls the offensive set but must be weary of burns
3. Revamp: No
Uxie
1. Drop trick scarf set and put it in AC of support set or other options
2. Checks and Counters: Escavalier counters Uxie
3. Revamp: No
Whimsicott
1. Sets haven't changed
2. Checks and Counters: Escavalier walls and punishes with stab bug
3. Revamp: No