Playing Skull & Shackles and we got shipwrecked. My character has Mending as a cantrip. According to the books, cantrips are so inconsequential that they can be cast "without limit".
Mathematically, a character could cast Mending every 6 seconds healing a hole in a ship an average of 1200 HP in an hour. The question is - are there any rules that prevent a character from casting Mending 600 times in a row for an hour?
My DM didn't let me get away with it, which is fine. I'm just curious if there are any rules out there that might apply.
My purpose in asking the question is less about how to repair the ship and more about the casting limitations for a spellcaster. My DM and I agreed that between the two of us, we could find a way to make mending work. Our question was about whether or not my character could keep it up long enough for it to work. As someone pointed out, mending has a 10 minute casting time, so the math actually works out to an average of 12 HP in an hour, which would take several days to repair a hole in the hull of a ship. Several days of constant casting. At what point does a character become exhausted from casting cantrips? That is the question I intended to ask and it might apply to other situations in the future, beyond mending a ship.