RAW it's not right: "you touch a non-magical weapon".Well now I'm confused. A player asked me yesterday if magic weapon can be cast on monk's fists and I said yes. Was that not right?
RAW it's not right: "you touch a non-magical weapon".
As DM you can rule how you like though.
It's also RAI. Body parts are not weapons. And you might also argue that a monk's body is not "non-magical". Monks get a "your unarmed strikes count as magical" ability later on, specifically because they can't benefit from Magic Weapon.Would there be any good reason not to allow that, other than RAW?
I don't think there is a 'natural attack' category.... each monster attack is their own special thing.
However the crocodile (and pretty much every creature) specifically state the attack is "Bite. Melee Weapon Attack:'.
So yes.
Not really, despite the rules arguments. It isn't going to break the game. You may want to consider whether you'd allow it the next time that question were asked, but I don't see a pressing reason to go back on what you said in this particular case.Would there be any good reason not to allow that, other than RAW?
It's also RAI. Body parts are not weapons. And you might also argue that a monk's body is not "non-magical". Monks get a "your unarmed strikes count as magical" ability later on, specifically because they can't benefit from Magic Weapon.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.