reason why you can play 'for free'

target of play 'for free'

Barash
CIVILIAN 6 / 7 / 4 male
 Your personnel may report here (for free, once each turn).  Doubles Hologram Ruse.  Youth

Admiral Picard, Ambassador Tomalak, Commander Data, Commander Troi, Prot

Minuet
CIVILIAN 5 / 8 / 4 female  
 Once each turn, your Bynars card may play for free.  Once every turn, may "stop" up to two males present.

Bynars Data Transfer, Bynars Weapon Enhancement

Pa’rena
  SCIENCE 5 / 7 / 4 female
 Physics  Exobiology  Your Ketracel-White may report here, for free.

Ketracel-White

Professor Sisko
   SCIENCE 6 / 8 / 5 female  
 ENGINEER  Astrophysics  Physics
 Any Sisko may report where present (for free if Jake).

Jake and Nog, Jake Sisko