Solution: Phase 3 Metapuzzle

Written by Francis Heaney

Each of the 12 puzzle solutions has a distinct first letter. If the solutions are arranged in alphabetical order, the non-initial portions of the solutions form a 12 by 12 square:

  A STROPHYSICAL
  B RINKSMANSHIP
  D AUGHTEROFEVE
  F OREMENTIONED
  I NSTRUMENTALS
  M ARILYNMONROE
  O RTHOHYDROGEN
  P UBLICAFFAIRS
  S ENSORYCORTEX
  T ROUBLEMAKERS
  U NCEREMONIOUS
  W HENCEFORWARD

One diagonal of the square spells SIGMUND FREUD, the entity for this round, and the other diagonal spells the incantation LIE ON MY COUCH.