Super Hero In Disguise

You've gotten some sore of supernatural gift that manifest in you, either that or a really cool gadget that can transform you, and now you have a so called destiny to fulfill... or some junk like that. Point is you can transform now, into what? that's for your imagination to come up with

• Transformation Tool. You develop the inexplicable ability to hide your weapons and armor inside a mundane object. Choose a seemingly mundane item such as a belt, key, a deck of cards or any small non magical item, it then becomes a medium for your transformation, once chosen, it cannot be changed. The chosen item is magical in nature but cannot be supressed by spells such as antimagic field. The item creates an extra dimensional space in which you may store armors, weapons and items in. The tool has no volume limit, and a maximum weight limit of 100 lb. It cannot store items that contains extra dimensional space like a bag of holding,  handy haversack, or portable hole. Items cannot be stored or withdraw from the Tool unless you perform a "Henshin"
  (Items that are attunement based retain your attunement to it when stored this way, but you do not benefit from the effects of the item unless it is withdrawn from the Tool.)
  
  
• Henshin. By holding your Transformation tool, you can store and withdraw your gear, accessing them through a bombastic choreographic dance number where loud and catchy music follows, and there's always an explosion somewhere. As a bonus action, you can brandish your Transformation Tool, shout "Henshin" and immediately don and draw any of your weapons and armor stored (Your choice if multiple items) in a flashy transformation sequence, this transformation sequence is inherently non-magical and is not affected by spells and effects that would dispel magic such as the spell antimagic field. You may dismiss this transformation or swap between stored items with a Bonus Action (Which is also accompanied by a flashy transformation sequence). Once dismissed, any item on your body is then stored in your Transformation Tool as long as it does not exceed the weight Limit.
  (Your DM may allow your appearance to be altered while transformed, if so discuss with Your DM on what your "Hero" Form looks like, note this appearance altering effect should not have any actual benefit to your game statistic such as an increase in height or a bonus to any statistic unless it is an effect of an item and should purely be cosmetic.)

When you take this feat again, you gain an additional Transformation Tool which shares the space of all previous one