Phalanx Fighting
Source
Character Operations Manual pg. 69
Whenever you or an ally within 10 feet of you is wielding a shield, as a move action you can grant yourself and all allies within 10 feet of that ally the unaligned shield bonus of that shield until the start of your next turn.
Dragonscript
ID
2a9a9b66f6bcab07bfb20e5a