iserith
Magic Wordsmith
Now you've stoked my curiosity. Could you please share how you'd resolve the declaration of 'I shoot my eye lasers at the monster' when the character has no given ability to have eye lasers, but no rules declare he doesn't. How does that work out in Iserth's game?
It would seem that you'd be hoist on your own petard if you declare they cannot shoot eye lasers. The rules do not say that they cannot.
Rather than give you a fish, I'd like to show you how to fish instead.
Per Basic Rules, page 3, the DM describes the environment, then the players describe what they want to do, at which point the DM narrates the results of the adventurers' actions. Sometimes, the DM calls the mechanics into play to resolve uncertainty. This loop is true no matter what is going on in the fiction.
Given this, when a player says "I want to shoot eye lasers at the monster..." - a description of what the player wants to do - what is the next step? Once you have considered this, please consider this other description of what the player wants to do:
"I try to turn the dial to 'S'..."
If you can figure these two things out, then you'll know how it works out in Iserith's game.