Sneak attack requires that either your foe has lost their Dexterity bonus to AC, or that you personally are flanking that target. A foe flanked by your allies, but not by you personally, isn’t subject to sneak attack.
Is there any feat, class feature, etc. etc. out there that changes this? Could be an option for the sneak attacker or the flanker, e.g. something that says “you can sneak attack foes that your allies are flanking, even if you aren’t” or something that says “when you flank a foe, your allies also count as flanking that foe,” or something along those lines.
Since there has been some confusion, various scenarios where this would be relevant:
Grid Layout | Notes |
---|---|
\begin{array}{c|c} \phantom{😡} & \phantom{😡} & \phantom{😡} & \phantom{😡} \\ \hline & & 😉 \\ \hline & \!\!\!\!\!🙂\rlap{\!\!🗡️} & 😡 \\ \hline & & 😉 \\ \hline \\ \end{array}\begin{array}{c|c} \phantom{😡} & \phantom{😡} & \phantom{😡} & \phantom{😡} \\ \hline & & 😉 \\ \hline & \!\!\!\!🙂\rlap{\!🗡️} & 😡 \\ \hline & & 😉 \\ \hline \\ \end{array} | \$🙂\!\!🗡️\$\$🙂\!🗡️\$ is me with a melee weapon, 😉 are my allies, and 😡 is our foe. |
\begin{array}{c|c} \phantom{😡} & \phantom{😡} & \phantom{😡} & \phantom{😡} & \phantom{😡} & \phantom{😡} & \phantom{😡} \\ \hline & \!\!\!\!\!🙂\rlap{\!🏹} & & 😉 & 😡 & 😉 \\ \hline \\ \end{array} | \$🙂\!🏹\$ is me with a ranged weapon, 😉 are my allies, and 😡 is our foe. |
\begin{array}{c|c} \phantom{😡} & \phantom{😡} & \phantom{😡} & \phantom{😡} & \phantom{😡} \\ \hline & \!\!\!\!\!🙂\rlap{\!\!\!\!🔱} & 😉 & 😡 \\ \hline & & 😉 \\ \hline \\ \end{array}\begin{array}{c|c} \phantom{😡} & \phantom{😡} & \phantom{😡} & \phantom{😡} & \phantom{😡} \\ \hline & \!\!\!🙂\rlap{\!\!\!\!🔱} & 😉 & 😡 \\ \hline & & 😉 \\ \hline \\ \end{array} | \$🙂\!\!\!\!🔱\$ is me with a reach weapon, 😉 are my allies who have island of blades, and 😡 is our foe. |
Suggestions that can only handle some of these scenarios are acceptable, as are suggestions that have other caveats or limitations. Aside from island of blades mentioned in that third scenario, I’m not aware of anything that can change who counts as being flanked.
All non-epic/non-mythic officially-licensed D&D 3.5e or Pathfinder 1e content may be considered. Not interested in shenanigans; I want an official option that just does this.