How to Make Magic Items Stronger or Weaker

I can't find a formula for making existing magic items stronger or weaker. Instead, try to bring out just like one thing at a time when you're affecting how players play the game. Try a fordrophos generic stat block rather than using the Monster Manual. See how it feels. Ask them how it goes. I really like adding a magic spell to an item that's usable one time per day. It's a great way to make weapons more powerful. You can very easily make these sort of legacy weapons which get better as players accomplish quests or as they reach higher level. And also because spells are so varied, there's so many of them. If you include like the Deep