Assault vest iron thorns
(tldr, don't try and make special iron thorns, it does like 20% to registeel with earth power, this is why special iron treads is mid as well)
Iron Thorns @ Assault Vest
Ability: Quark Drive
Tera Type: Flying
EVs: 252 HP / 252 Atk / 4 SpD
Adamant Nature
- Thunder Punch
- Stone Edge
- Volt Switch
- Earthquake/Ice Punch/Low Kick
NU: Smogon, can we have tyranitar?
Smogon: We have tyranitar at home.
Tyranitar at home:
Okay, now that I have that awful joke out of the way, assault vest iron thorns is basically a really, really good special wall, even if they hit you with a 4x super effective hit.
252 SpA Flygon Earth Power vs. 252 HP / 4 SpD Assault Vest Iron Thorns: 328-388 (81.1 - 96%) -- guaranteed 2HKO
0 SpA Palossand Earth Power vs. 252 HP / 4 SpD Assault Vest Iron Thorns: 304-360 (75.2 - 89.1%) -- guaranteed 2HKO
Iron thorns can take these hits, and if it isn't 4x effective its most likely taking multiple of them. Thunder Punch keeps thorns health in better condition than the other electric moves so it can continue to wall things while stone edge allows it to pack a big punch. Volt switch allows thorns to take the special hit and then slow pivot out to a teammate. The last moveslot is customisable, e-quake is for steel types, ice punch can deal with ground types and low kick can just be a powerful move against heavy targets (idk, use it if you want to, its your choice). Tera flying means it ignores ground moves entirely and due to it potentially threatening all types that are super effective against it, can be pretty deadly.