Can you trigger Ambush Platform's abilities to play Gun Drones and/or Shadowsun's Stealth Cadre?
Ambush Platform:
Interrupt: When you deploy an attachment, reduce its cost by 1.
Combat Action: Exhaust this support to deploy an attachment from your hand.
Shadowsun's Stealth Cadre:
This card may enter play as an attachment...
Gun Drones:
You may deploy this card as a Drone attachment...