rabidepicgoose, take an Aron, called Aurum. Give it the Quick Claw as soon as you catch it. Its moveset for the E4 must be Double-Edge (Sootopolis Move Tutor), Earthquake, Iron Tail and Cut, it must hold the Quick Claw and its ability must be Rock Head. To evolve the first time, it must defeat a Trapinch, a Baltoy and a Cacnea in the desert, a Spinda at Route 113, a Solrock at Meteor Falls, and a Spoink and a Machop at the Jagged Pass. To evolve the second time, it must defeat five swimmers on any Water route (Double battles also count). Good luck with the Aron that managed to survive till Drake in my Nuzlocke!
MoonOwl, take a Nidoran Male that must never forget Double Kick. To evolve into Nidorino, you must have beaten Misty. To evolve into Nidoking, wait until it is at level 33 at least. Name it Bart.