reveal
Adventurer
Obscure said:The infusion "Metamagic Item" does NOT allow you to bypass the extra charge cost for applying metamagic to a wand. It says nothing about that in the description. The point of "Metamagic Item" is much like the point of most infusions -- to aid the artificer's comrades. It allows others to use the wand with the artificer's metamagic feat imbued within it for a short time.
So, if all the rays successfully hit, you're looking at 36d6 points of damage and 5 charges expended. If you think this is still overpowered, I would ban Twin Spell rather than the Artificer, or at least not allow it to stack with other metamagic feats, etc.
That may be "the point" of the infusion, but it's very poorly worded. Why wouldn't it not cost extra? That's also one of the problems I have with this. The 7th level ability of an Artificer allows you to add a known metamagic feat to a wand at the cost of extra charges. The "Metamagic Item" infusion allows a person to temporarily allow a metamagic feat to be applied to a wand. It says nothing about extra charges.
With that said, where in the book does it say that casting a wand with a metamagic spell costs more than 1 charge? Does it? I honestly don't know.