Legendary Armor (Plate)
A peculiar armour that seems to turn on its wearer if they get into trouble but grants them incredible power if they persevere anyway.
Opening
After the start of combat (or any troublesome other troublesome situation), your AC and movement speed are halved, and you gain disadvantage on all attack rolls and ability checks.
Each turn, you can spend your action or your bonus action (not both) to activate an Endgame Charge.
Going Unconscious turns the Armour into a normal plate armour until the end of combat.
Endgame
After Gaining 5 Endgame Charges on your armour, it loses all of the negative effects from the Opening, and the armour becomes enhanced for 1 minute.
Enhanced Armour

[1st tier]Downloadable content

[2nd tier]Item Cards