Hex proof ?

[MacUser001]

What you're asking is if the {Phantasmal Image} gains Hexproof and therefore can no longer be targeted by your opponent and thus sacked. I don't have an answer for you and I don't think anyone here has given you an answer either. Sorry man.

[Sagemaster]

He's asking if hexproof will prevent the sac from targeting by equipment...it wont

[D3g3n]

If you cast {Phantasmal Image} and have it enter the battlefield as a copy of another creature with Hexproof, your Image will gain that ability and cannot be a target of spells or abilites your opponent controls.

Now, if you equip the Image that is a copy of a Hexproof creature, the Image must be sacrificed since you have to target a creature to equip/attach them on. Hexproof does not prevent you from equipping, but the Image ability (sacrifice this when targeted by spell or ability) will cause it to be sacrificed.

If you copy a creature with Shroud, your Image would be safer since neither you nor your opponent will be able to target it and cause it to be sacrificed... though that may be a bit much.