So often in my games my group send me to scout being the super sneaky rogue, but I have a bit of trouble communicating with them, I have the message cantrip but that is only a range of 120 feet and wont go thought "1 foot of stone, 1 inch of common metal, a thin sheet of lead, or 3 feet of wood blocks" , I need a better way to tell my boys what is going on and make as little sound as possible doing so, I have a decent amount of gold at the moment and we are in a big city so suggestions in the form of magic items are accessible, we also have a wizard so spell scrolls work too (we are level 7 btw)
The best answer here would be a warlock option 3 levels in, but either of you could take it. If you take Pact of the Chain, you can grab Voice of the Chain Master as your invocation which allows you to to communicate and basically control it as long as it remains on the same plane. 3 levels of investment is a bit steep perhaps, but it isn't as if warlock doesn't also have some great features you would also be able to pick up. This just requires a specific pact boon and only 1 of your invocation slots.
So often in my games my group send me to scout being the super sneaky rogue, but I have a bit of trouble communicating with them, I have the message cantrip but that is only a range of 120 feet and wont go thought "1 foot of stone, 1 inch of common metal, a thin sheet of lead, or 3 feet of wood blocks" , I need a better way to tell my boys what is going on and make as little sound as possible doing so, I have a decent amount of gold at the moment and we are in a big city so suggestions in the form of magic items are accessible, we also have a wizard so spell scrolls work too (we are level 7 btw)
Sending stones would be an option for you, I've used them before pretty effectively when scouting.
You cant communicate with sending stones quickly and quietly
1.you have to speak your message aloud into the stone
2. Has ti be 25 words or less
3. ONLY WORKS ONCE PER DAY
So because of those restrictions that doesn't quite take the cake
The best answer here would be a warlock option 3 levels in, but either of you could take it. If you take Pact of the Chain, you can grab Voice of the Chain Master as your invocation which allows you to to communicate and basically control it as long as it remains on the same plane. 3 levels of investment is a bit steep perhaps, but it isn't as if warlock doesn't also have some great features you would also be able to pick up. This just requires a specific pact boon and only 1 of your invocation slots.
What if you already are a hexblade warlock
That is one of the perks of playing a soul knife rouge. Telepathic communication is a 3rd level subclass feature.
You could see if you DM might homebrew an item for you , similar to the ear rings used by Vox Machina in Season 1 of Critical Role.
Thanks!