|
It states that Silent Image lasts based on concentration and a will save can disbelieve it.
Lets say Jerry the level 1 sorcerer casts silent image on himself and makes it look like full plate.
Would he get the AC bonus of full plate? I was in a campaign with an illusionary wall and we had to disbelieve it to go through it, hitting it with weapons resulted in the weapon bouncing off.
So would an illusion spell (dosent have to be silent image) work for providing any kind of positive mechanic if worn as a player?
Creatures encountering an illusion usually do not receive saving throws to recognize it as illusory until they study it carefully or interact with it in some fashion.
A successful saving throw against an illusion reveals it to be false, but a figment or phantasm remains as a translucent outline.
A failed saving throw indicates that a character fails to notice something is amiss. a character faced with proof that an illusion isn’t real needs no saving throw. If any viewer successfully disbelieves an illusion and communicates this fact to others, each such viewer gains a saving throw with a +4 bonus.
Silent image creates a visual illusion, nothing more. It won't stop a sword (nor anything else) from going right through it. An illusory wall created with silent image would fool a person right up until they actually tried to walk through it, at which point they walk through it, no save required. A save would come into play if a character interacts with it in a manner that wouldn't automatically break the illusion, such as studying it carefully or manipulating it.
Illusory armor provides "mechanical" advantages in cases where it would be advantageous for others to think you're wearing armor--for example, attempting to fool someone into thinking you're a member of the royal guard.
Illusion spells are a contentions topic. You will lots of opinions about how they should be run.
Personally, I consider "weapons bouncing off" to be foul play whether or not you've disbelieved that illusion. And if you place your hand on it and attempt to go through, you should find yourself easily able to pass through. Yes, that means illusions are weak. In my opinion, they are. They're best when your targets can't directly interact with them.