Get. Out. (Landorus) @ Choice Specs  
Ability: Sheer Force  
EVs: 4 Atk / 252 SpA / 252 Spe  
Timid Nature  
IVs: 30 Atk  
- Earth Power  
- Sludge Wave  
- Hidden Power [Ice]  
- Rock Slide / Psychic (legit just Venusaur c team)

S Rank
50/50s Charizard-Mega-X, if you're scared of phys def go naive
S- Rank
 Magearna
A+ Rank
 Charizard-Mega-Y
 Non max speed ice punch Metagross-Mega
 Porygon-Z actually dies to earth power
 Tapu Lele OHKOs regular fast 100%, decent roll against more bulky modest
A Rank
 Mew 252 SpA Choice Specs Sheer Force Landorus Earth Power vs. 252 HP / 0 SpD Mew: 262-310 (64.8 - 76.7%) -- guaranteed 2HKO not the worst roll
252 SpA Choice Specs Sheer Force Landorus Earth Power vs. +2 252 HP / 0 SpD Mew: 132-156 (32.6 - 38.6%) -- 56.3% chance to OHKO this is with minimum first roll
 Zeraora lul
 Zygarde-Complete lul
A- Rank
 Aegislash lul
 Landorus-Therian lul
 Magnezone lul, hope no hp ice
Kommo-o 252 SpA Choice Specs Sheer Force Landorus Earth Power vs. +1 240 HP / 100+ SpD Kommo-o: 139-165 (39.6 - 47%) -- 81.3% chance to OHKO assuming minimum first roll
84 SpA Kommo-o Clangorous Soulblaze vs. 0 HP / 0 SpD Landorus: 261-307 (81.8 - 96.2%) -- guaranteed 2HKO just pray that they don't believe in speed creeping
 Primarina 252 SpA Choice Specs Sheer Force Landorus Sludge Wave vs. 240 HP / 16 SpD Primarina: 322-380 (89.1 - 105.2%) -- 31.3% chance to OHKO ig maybe if you went like modest you could beat Prima
 Tapu Fini I mean you could beat no icy wind Tapunium
B+ Rank
 Altaria-Mega 252 SpA Choice Specs Sheer Force Landorus Sludge Wave vs. 252 HP / 4 SpD Altaria-Mega: 354-418 (100 - 118%) -- guaranteed OHKO git gud and predict n00b
 Clefable 252 SpA Choice Specs Sheer Force Landorus Sludge Wave vs. +2 248 HP / 108 SpD Clefable: 180-214 (45.8 - 54.4%) -- 53.1% chance to 2HKO unless they have the blessing of rngesus, it takes 3 moonblasts for you to die so you should win
 Garchomp 220 Atk Choice Band Garchomp Outrage vs. 0 HP / 0 Def Landorus: 313-370 (98.1 - 115.9%) -- 87.5% chance to OHKO I expected worse, but at least you can beat Groundium
 Genesect 252 SpA Choice Specs Sheer Force Landorus Earth Power vs. 52 HP / 0 SpD Genesect: 274-324 (92.5 - 109.4%) -- 56.3% chance to OHKO ehhhhhh
 Heatran maybe if you ran focus miss?
 Mawile-Mega lul
 Serperior actually dies
 Togekiss actually yes, unless you get flinch haxed by scarf
 Tyranitar-Mega unless ice punch
 Venusaur-Mega need psychic
 Victini 252+ Atk Victini V-create vs. 0 HP / 0 Def Landorus: 294-346 (92.1 - 108.4%) -- 50% chance to OHKO this is for scarf, any other gets bopped
B Rank
 Blaziken-Mega 252+ Atk Blaziken-Mega Flare Blitz vs. 0 HP / 0 Def Landorus: 274-324 (85.8 - 101.5%) -- 12.5% chance to OHKO
 Haxorus 252+ Atk Mold Breaker Haxorus Outrage vs. 0 HP / 0 Def Landorus: 258-304 (80.8 - 95.2%) -- guaranteed 2HKO and yes, Earth Power kills
 Incineroar lul
 Krookodile lul
 Magneton lul
 Pheromosa hope no ice beam
Registeel lul
 Scizor-Mega just kill it
 Volcarona bop
 Whimsicott lul
B- Rank
 Diancie-Mega ig if no magnet rise?
 Golem lul
 Medicham-Mega unless there is some special defense set I don't know about
 Swampert-Mega as usual, if you hate swampert go grass knot
 Tapu Bulu 180 Atk Tapu Bulu Wood Hammer vs. 0 HP / 0 Def Landorus in Grassy Terrain: 306-361 (95.9 - 113.1%) -- 75% chance to OHKO if scarf
 Vivillon bop
 Zapdos lul