Armor (Half Plate Armor or Plate Armor), Legendary (Requires Attunement)
While you’re wearing this armor, you can take a Magic action and use a command word to gain the effect of the Etherealness spell. The spell ends immediately if you remove the armor or take a Magic action to repeat the command word. This property of the armor can’t be used again until the next dawn.
Action (command word): Etherealness effect for 10 min. Recharges at dawn.
RollQuest ships the D&D 2024 SRD as a content pack, on a 5e character sheet that does the maths - roll from the sheet and let the numbers work themselves out. Free to start.