Which Pokemon Evolve With Trade Evolution While Holding An Item?

Protector is found in mt mortar along with dubious disc. Upgrade in sliph co. Building from cop. Magmizer on cinnibar you need rock climb.
Protector= rhydon to rhyperion
magmizer= magmar to magmortar
porygon+ upgrade= porygon 2 + dubious disc= porygon z

you'll need rock climb to get magmizer, dubious disc and protector.

Krabby - King's Rock
Porygon - Up-Grade
Porygon2 - Dubious Disc
Electabuzz - Electrizer
Magmar - Magmarizer
Rhydon - Protector
Dusclops - Reaper Cloth

Magmar with the magmarizer and electabuzz with the electirizer then rhydon with the protector

A Porygon with an upgrade= Porygon2
 
A Porygon2 with a dubious disc=PorygonZ

The guest above the one above me forgot dusclops+holding reaper cloth while trading= dusknoir

Ooh here's one no got.... Poliwhirl while holding king's rock. It will turn into politoed

Steelix is a metal coat on an Onix being traded
Scizor is a metal coat on a Scyther being traded
Dusclops with a reaper cloth
Clamperl with a Deepsea scale or tooth
Rhydon with a Protector Coat

Porygon +up grade =porygon 2 + dubious disc = porygon z

Ry don with a protector