Mind you, that brings Mage's Weapon abuse to my mind. A rule like item encounter and daily powers can only be used once, even if you have multiple items with that power, until the power is recharged should cover it.
You're right. This needs 2 fixes IMO. 1) The suggested house rule on the handbook of broken seems to fix the problem with this specific power.Spam of Kings
2) Add a rule that encounter and daily powers can only be used at most 1/turn, even if they aren't expended.
Bag of Rats stops this already, but my suggested house rule about self damage would also apply.Scion of World Ending
Bag of Rats doesn't really address the dragonborn breath recovery situation, since it talks about hits or reducing a target 0 hp. It would cover it if you add "take damage from a target" to the line. Which is more or less what my house rule is about.You can rules lawyer this into oblivion with existing restrictions by citing the 'Bag of Rats' rule from the DMG, P40.
I'll agree with that, but I think it's still a useful house rule which cuts down on some of the power of multi-attacks.I'm not sure whether I'd call this one 'essential', in that the rule doesn't address a fundamental design/scaling flaw or prevent something from bending/breaking the game.