The Set

G O D S E T (Persian-Alola) @ Fairium Z  
Ability: Fur Coat  
EVs: 252 Atk / 4 SpD / 252 Spe  
Jolly Nature  
- Charm  /  Amnesia
- Rest  
- Play Rough  
- Toxic / Taunt / Work Up / Amnesia

What Hits it hard enough to KO?
Houndoom
252+ SpA Houndoom Inferno Overdrive (185 BP) vs. 0 HP / 4 SpD Persian-Alola: 415-490 (153.1 - 180.8%) -- guaranteed OHKO

Houndoom-Mega
252 SpA Houndoom-Mega Fire Blast vs. 0 HP / 4 SpD Persian-Alola: 268-316 (98.8 - 116.6%) -- 93.8% chance to OHKO 

Pangoro
252+ Atk Mold Breaker Pangoro Superpower vs. 0 HP / 0 Def Persian-Alola: 630-744 (232.4 - 274.5%) -- guaranteed OHKO 

Absol
252+ Atk Life Orb Absol Superpower vs. 0 HP / 0 Def Fur Coat Persian-Alola: 283-335 (104.4 - 123.6%) -- guaranteed OHKO 

Crawdaunt
252+ Atk Choice Band Crawdaunt Superpower vs. 0 HP / 0 Def Fur Coat Persian-Alola: 308-364 (113.6 - 134.3%) -- guaranteed OHKO 

Tyranitar
252+ Atk Choice Band Tyranitar Superpower vs. 0 HP / 0 Def Fur Coat Persian-Alola: 334-394 (123.2 - 145.3%) -- guaranteed OHKO 

Scrafty
252+ Atk Scrafty High Jump Kick vs. 0 HP / 0 Def Fur Coat Persian-Alola: 276-326 (101.8 - 120.2%) -- guaranteed OHKO 

Hoopa-Unbound
252 SpA Hoopa-Unbound Focus Blast vs. 0 HP / 4 SpD Persian-Alola: 452-532 (166.7 - 196.3%) -- guaranteed OHKO 

Hydreigon
252 SpA Hydreigon Draco Meteor vs. 0 HP / 4 SpD Persian-Alola: 292-345 (107.7 - 127.3%) -- guaranteed OHKO 

Shiftry
252+ SpA Life Orb Shiftry Leaf Storm vs. 0 HP / 4 SpD Persian-Alola: 333-394 (122.8 - 145.3%) -- guaranteed OHKO 

Greninja
252 SpA Greninja Hydro Cannon vs. 0 HP / 4 SpD Persian-Alola: 295-348 (108.8 - 128.4%) -- guaranteed OHKO 
(I eliminated Repeats)

So...of these sets, what does Persian-A outspeed and OHKO?
Houndoom
252 Atk Persian-Alola Twinkle Tackle (175 BP) vs. 0 HP / 0 Def Houndoom-Mega: 128-151 (43.9 - 51.8%) -- 11.7% chance to 2HKO

Pangoro
252 Atk Persian-Alola Twinkle Tackle (175 BP) vs. 4 HP / 0 Def Pangoro: 572-676 (172.2 - 203.6%) -- guaranteed OHKO 
252 Atk Persian-Alola Twinkle Tackle (175 BP) vs. 4 HP / 0 Def Roseli Berry Pangoro: 286-338 (86.1 - 101.8%) -- 12.5% chance to OHKO 

Absol
252 Atk Persian-Alola Twinkle Tackle (175 BP) vs. 0 HP / 4 Def Absol: 350-414 (129.1 - 152.7%) -- guaranteed OHKO 
252 Atk Persian-Alola Twinkle Tackle (175 BP) vs. 252 HP / 4 Def Crawdaunt: 266-314 (80.6 - 95.1%) -- guaranteed 2HKO 

Tyranitar
252 Atk Persian-Alola Twinkle Tackle (175 BP) vs. 8 HP / 0 Def Tyranitar: 214-254 (62.3 - 74%) -- guaranteed 2HKO 
252 Atk Persian-Alola Twinkle Tackle (175 BP) vs. 252 HP / 4 Def Roseli Berry Scrafty: 206-244 (61.6 - 73%) -- guaranteed 2HKO 

Shiftry
252 Atk Persian-Alola Twinkle Tackle (175 BP) vs. 252 HP / 0 Def Shiftry: 352-416 (91.6 - 108.3%) -- 50% chance to OHKO 

Loses to:

Houndoom-Mega

Pangoro @ Roseli Berry

Crawdaunt @ Choice Band

(Only Bulky Band Crawdaunt)
Tyranitar

Scrafty @ Choice Scarf

Hoopa-Unbound @ Choice Scarf

Hydreigon @ Choice Scarf

Greninja

50/50s: 
Shiftry

What can it beat of those with Z-Charm?
Pangoro
-2 252+ Atk Mold Breaker Pangoro Superpower vs. +1 0 HP / 0 Def Persian-Alola: 210-248 (77.4 - 91.5%) -- guaranteed 2HKO 
-2 252+ Atk Mold Breaker Pangoro Hammer Arm vs. +1 0 HP / 0 Def Persian-Alola: 176-210 (64.9 - 77.4%) -- guaranteed 2HKO 

Crawdaunt
-2 252+ Atk Choice Band Crawdaunt Superpower vs. +1 0 HP / 0 Def Fur Coat Persian-Alola: 104-124 (38.3 - 45.7%) -- guaranteed 3HKO 

Tyranitar
-2 252+ Atk Choice Band Tyranitar Superpower vs. +1 0 HP / 0 Def Fur Coat Persian-Alola: 112-132 (41.3 - 48.7%) -- 9.4% chance to 2HKO after sandstorm damage 

Scrafty
-2 252+ Atk Scrafty High Jump Kick vs. +1 0 HP / 0 Def Fur Coat Persian-Alola: 92-110 (33.9 - 40.5%) -- guaranteed 3HKO

What Beats this:

Houndoom-Mega

Pangoro @ Roseli Berry

Hoopa-Unbound @ Choice Scarf

Hydreigon @ Choice Scarf

Greninja

The Sableye Matchup:

Sableye-Mega
252+ SpA Sableye-Mega Dazzling Gleam vs. 0 HP / 4 SpD Persian-Alola: 204-240 (75.2 - 88.5%) -- guaranteed 2HKO 
252+ SpA Sableye Twinkle Tackle (160 BP) vs. 0 HP / 4 SpD Persian-Alola: 346-408 (127.6 - 150.5%) -- guaranteed OHKO 
252 Atk Persian-Alola Twinkle Tackle (175 BP) vs. 248 HP / 0 Def Sableye: 296-350 (97.6 - 115.5%) -- 87.5% chance to OHKO  
252 Atk Persian-Alola Twinkle Tackle (175 BP) vs. 248 HP / 252 Def Sableye: 222-262 (73.2 - 86.4%) -- guaranteed 2HKO (and you die to metal burst)
252 Atk Persian-Alola Twinkle Tackle (175 BP) vs. 248 HP / 8 Def Sableye-Mega: 192-226 (63.3 - 74.5%) -- guaranteed 2HKO  (and you die to metal burst)
However, Persian-A can run Work Up + Amnesia + Rest to get past Mega-Sableye
252+ SpA Sableye-Mega Dazzling Gleam vs. +2 0 HP / 4 SpD Persian-Alola: 102-122 (37.6 - 45%) -- guaranteed 3HKO 
252+ SpA Sableye Twinkle Tackle (160 BP) vs. +2 0 HP / 4 SpD Persian-Alola: 174-206 (64.2 - 76%) -- guaranteed 2HKO