I think, frankly, that all of "I'm mute (for whatever reason; the player we had who played up the mute thing actually had taken a vow of silence in-game), and communicate only via gestures", "I'm mute and communicate via a slate (which can be epic if the player actually uses a slate and has to get people to pause if they want them to listen)", "I'm mute (or only speak a language nobody else speaks), but my hireling/familiar/animal companion can talk for me", and even "I'm mute, but communicate via telepathy" are interesting roleplaying challenges of varying levels.
The only one that's kinda a cheat is "I'm mute, but communicate all the time via telepathy" -- that's actually a fun roleplaying choice, but isn't really mute; it does mean you're limited to the frequency of telepathic messages and maybe the willingness of your allies to accept telepathic contact; if an ally refuses to let you into their head, it becomes more fun. And some telepathy is LOS -- this means that darkness and blindness might be a big issue for you.
Other than that, even if you're able to communicate via a slate, an NPC, or even a companion, the feel and the nature of communication changes. There's a big difference between you talking and an associated NPC talking, and situations will come up where the NPC talking instead of you is a real hindrance.
Telepathic options: (note that telepathy 5 is full telepathy within LOE (not LOS)) within Heroic:
Shardmind: telepathy 5
Kalishtar: telepathy 5
Ardent: At will telepathy ,but you have to attack the target (but not necessarily hit them).
Telepathic Psion: Per-encounter two-way telepathy within LOS with a 25 word limit (each way).
Far Thought feat: Daily telepathy 5 within LOS for 5 minutes.
Elan Heritage feat: (requires Humanoid, you become Immortal) telepathy 5
Linked Spirit feat: (requires Shardmind and shaman; your telepathy can use your spirit as an origin as well as you).
Command Circlet Item: (level 5 Head, Requires Living Construct--Shardmind or warforged): gain Telepathy 20 LOS.
The only one that's kinda a cheat is "I'm mute, but communicate all the time via telepathy" -- that's actually a fun roleplaying choice, but isn't really mute; it does mean you're limited to the frequency of telepathic messages and maybe the willingness of your allies to accept telepathic contact; if an ally refuses to let you into their head, it becomes more fun. And some telepathy is LOS -- this means that darkness and blindness might be a big issue for you.
Other than that, even if you're able to communicate via a slate, an NPC, or even a companion, the feel and the nature of communication changes. There's a big difference between you talking and an associated NPC talking, and situations will come up where the NPC talking instead of you is a real hindrance.
Telepathic options: (note that telepathy 5 is full telepathy within LOE (not LOS)) within Heroic:
Shardmind: telepathy 5
Kalishtar: telepathy 5
Ardent: At will telepathy ,but you have to attack the target (but not necessarily hit them).
Telepathic Psion: Per-encounter two-way telepathy within LOS with a 25 word limit (each way).
Far Thought feat: Daily telepathy 5 within LOS for 5 minutes.
Elan Heritage feat: (requires Humanoid, you become Immortal) telepathy 5
Linked Spirit feat: (requires Shardmind and shaman; your telepathy can use your spirit as an origin as well as you).
Command Circlet Item: (level 5 Head, Requires Living Construct--Shardmind or warforged): gain Telepathy 20 LOS.
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