I noticed that you're lacking sets that utilize Cool moves. Let's fix that!
Heracross-Mega @ Heracronite
Ability: Skill Link
EVs: 248 HP / 252 Atk / 8 SpD OR 252 Atk / 4 SpD / 252 Spe
Adamant/Jolly Nature
- Swords Dance
- Pin Missile
- Vacuum Wave
- Bullet Seed/Focus Blast
Heracross is one of the high Atk that actually benefits from new moves! Vacuum Wave not only gives you STAB priority that hits on the special side, which compliments your high physical damage from Pin Missile and a great boosting move in Swords Dance. Despite its low power of 40 bp, Vacuum Wave really packs a punch, especially after a boost.
+2 252+ SpA Mega Heracross Vacuum Wave vs. 252 HP / 0 SpD Filter Mega Aggron: 339-400 (98.5 - 116.2%) -- guaranteed OHKO after Stealth Rock
Just pair Heracross with something that can handle Flying types (Rock Blast no longer scales off of Atk) and you're good to go.
Electivire @ Life Orb
Ability: Motor Drive
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant/Jolly Nature
- Volt Switch
- Thunderbolt
- Focus Blast
- Taunt/Thunder Wave
Electivire is one of the few Electrics that can still function, as Volt Switch and Thunderbolt have become Cool and few Electrics have high Atk...except Electivire! Electric/Fighting is a fairly decent combo, and you provide Taunt/Twave support.
And here's a bonus Clever set!
Sylveon @ Leftovers
Ability: Pixilate
EVs: 252 HP / 4 Def / 252 SpD
Calm Nature
IVs: 0 Atk
- Secret Power
- Wish
- Protect
- Heal Bell
While no Fairy type moves scale off of SpD, Pixilate allows you to use Normal type moves for the same effect! Secret Power has a 30% chance to paralyze and despite the drop in power from Hyper Voice, your investment + naturally higher SpD will actually make it hit harder on standard cleric sets:
4 SpA Pixilate Sylveon Hyper Voice vs. 0 HP / 0 SpD Mew: 138-163 (40.4 - 47.8%) -- guaranteed 3HKO after Leftovers recovery
252+ SpD Pixilate Sylveon Secret Power vs. 0 HP / 0 Def Mew: 163-193 (47.8 - 56.5%) -- 33.2% chance to 2HKO after Leftovers recovery
As a cleric, you also pair well with threats like Mega Aggron, who lacks recovery and struggles against Fighting types. Plus, the 30% chance to paralyze allows you to run Speed control for all the slow, bulky Pokemon that are good in GT (again, Mega Aggron).