My DM is super liberal with magic items. Right around the holidays he asked us to homebrew a magic item or spell that we may encounter at some point. I play a tempest cleric/ abjuration wizard aarakocra (only 2 lvls in cleric)

So I came up with an item that let's you cast glyph of warding and store multiple glyphs while being able to adventure around.

The way glyph of warding works this let's me stack multiple concentration spells and attack spells. For example I may put bless and bane to trigger at the start of initiative when I allow it or launch lightning bolt like it's eldritch blast.

The DM is awesome and I'm wondering if I should police myself. I may have shredded through the big encounter of a dungeon like it was tissue paper.

Thanks for the advice and share your cool homebrew items.

Edit-

I should have mentioned that the DM more or less gave me the idea when the party found a "suspicious spell tome" filled with a still unknown amount or glyph of warding traps. It should have gone off when I left the room but he said it would go off when I opened the book.