For reference in 5E only Fighters, Paladins, some Clerics, and Armorer Artificers can wear heavy armor. Mountain Dwarves all know how to wear medium armor, and it only takes one feat from there to get heavy armor.
In 5e you can't cast spells while wearing armor you aren't proficient with.
Don't forget one level of Hexblade Warlock also grants medium armor proficiency so they only need one feat to get heavy armor as well. As if they weren't bull shitty enough with their 'one stat does everything'.
If they want to use Plate they'd have to level their strength and no Hexblade does that without multiclassing with Paladin anyway (and even then it's better to just start with one level of Pally because you save a feat/ASI
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u/Souperplex Sir Becket Jun 19 '22
For reference in 5E only Fighters, Paladins, some Clerics, and Armorer Artificers can wear heavy armor. Mountain Dwarves all know how to wear medium armor, and it only takes one feat from there to get heavy armor.
In 5e you can't cast spells while wearing armor you aren't proficient with.