Trying to do something specific with a homebrew item, basically it's a warhammer that has 7 charges. Starting with none the hammer has a +1 to attack, then when it has 2 charges it should have a +2, and then at 5 it should have a +3.

Was wondering if there was any way to get something like that to work? I know items can't pull info from sheets but I also can't think of any good work arounds to just manage this manually.

Unfortunately:

• Temporary bonuses like you describe are not currently supported by DDB.
• Bonuses to attack only and not damage are not currently supported by DDB.
• Magic Item charges only currently interact with spells on DDB.

Is there anything I could do to achieve something like this at all? I'd be willing to just make multiple weapons if need be

It would be simplest to manage the attack bonuses directly on the character sheet by customizing the weapon to correspond with the current number of charges it has.

Oh okay thank you, I didn't know there was a way to do that

Yup, just click/tap the weapon (or action) and on the sidebar that slides out click/tap “Customize.”