When casting the Spectral Missile spell you summon an illusory missile or thrown weapon of any type (cost 1 AP). You can use this weapon for to attack opponents (costs 2 AP and counts as a normal attack)- using your bonus in this spell as your attack bonus. Roll against targets DB and use the appropriate weapon table to calculate damage.
Any damage dealt is illusory and will disappear if target is reduced to 0 health (or below) or when the combat ends.
If the target does not know the weapon you use (cavemen hit by a shotgun for the first time in their lives), if you attack using stealth or if the GM rules that your attack is unrealistic - add the targets Resilience score to their DB.
The spectral missile weapon does normal damage as per the weapon created by the illusion. The weapon cannot be used to destroy or damage inanimate objects or creatures with very low IQ (below 5).
A target supecting an illusion can attempt to disbelieve - and must spend 1 AP to roll an opposed roll with targets Intuition score vs. attackers bonus in this spell.