Looking over the text or the Patient Infiltrator cards:
Deep Strike (1). You may Deep Strike this card as an Action during the combat phase.
Reaction: When you Deep Strike this unit, ready it and move up to 1 damage from this unit to a target unit at the same planet.
Is this meant to be used with 'Idden Base:
Each card you control in reserve is treated as a 2 ATK, 2 HP army unit during the combat phase.
If not, I cant think of another way his Reaction will come in to play?