Re: The Twilight Tomb: OOC
I use a sort of hybrid initiative system, that I think keeps close to the standard rules while being flexible enough for play-by-post, and keeps combat fairly manageable for me.
I roll everyone's initiative, list them in order, then divide them into batches between each set of monsters. So Monster 1, a few PCs, group of Monsters 2, the rest of the PCs, etc. If there's a specifically clash between actions, then I use the init order to sort it out.
Basically, if you're marked as green in my last update, then you're free to post.
You can wait if you like (though not too long!) and try to post later if you think it will mix things up. Or you could cast your spell on Gurgun now, and I'll let Gurgun then act as if he has it. In this cast, we pretend that Gurgun delayed to act after you, once you cast your spell. Talking through your plans is nice. :)