abirdcall
(she/her)
Again, it comes down to "here's an ability that requires you to have a specific magic item in your possession that you can't rely on having" vs. one that works with a magic item that should, in theory, be more readily available.
A specific magic item? It's more than half the book.
Also we're getting common magic items in the 2024 DMG as well. This was just in the 2014 one which is not what this ability was written for.