Can I Ready an action to do something I'm not currently capable of doing?
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Suppose I'm not currently holding a sword, but my ally is going to toss one to me on their next turn. Can I ready an action to attack with the sword that I'm not yet in possession of, with a trigger of "when I acquire a sword"? A similar situation arises with spells that grant the ability to perform new actions, such as dragon's breath . Can I ask my wizard ally to cast this spell on me and then ready an action to breathe fire with a trigger of "when I have dragon's breath cast on me"? In general, the question is: if I am not currently capable of taking a certain action, can I still ready that action if I expect to become capable of it some time in the next round?
dnd-5e readied-action
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