Artificers Armor

This suit of armor is reinforced with strong and sturdy steel from dwarfern mines. While you're wearing it, any critical hit against you becomes a normal hit. It also is made up of many different parts that can be separated with enough intelligence. It covers the whole body and can be resized at will as a bonus action.
At the back, it has got a metal backplate with places to screw on modular contraptions.
It also enhances your jumping ability by multiplying it by 3.

This armor consists of a fitted metal chest piece worn with supple leather. Although it leaves the legs and arms relatively unprotected, this armor provides good protection for the wearer's vital organs while leaving the wearer relatively unencumbered.

Notes: Immunity: Critical Hits, Bonus: Choose Dexterity or Intelligence, Bonus: Ranged Weapon Attacks, Artificer, Combat, Warding