It honestly doesn't matter the relative initiatives, if the boss is the only enemy all players will always go between the boss and the next time the boss has a turn, and players adjacent in initiative can always choose their turn order. So while one could argue over the realism of the setup which is primarily done for convenience, based on the game mechanics it's actually not too far off from a standard scenario, based on how turn mechanics work in the game.
Yes… one
could argue… Don’t threaten me with a good time ^^
The thing is, I don’t freakin’ know. If I
were to argue, I’d say that having 16 strength on your level 7 great weapons master is a misallocation of ability scores, that initiative swapping isn’t a reliable assumption given how many mobs usually surround bosses (in my limited experience), that Hold Person requires maintaining concentration (which isn’t necessarily a problem, provided initiative order lines up), that facing a boss seems like the perfect time to use rare consumables or that poison has low opportunity cost and the benefit of immediate payoff, reducing the odds that something goes wrong between a failed save and whatever horrific fate you have planned.
All that said, you kinda sold me on Hold Person. The fact that, under favorable initiative conditions (I can’t really let that go - but it speaks more of me than you) you’re 60% to land 6 crits with your fighter seems deece.
I still wish Larian would change the saving throw trigger be at the end of turn rather than at the beginning. But so many threads are claiming BG3 is too easy, I don’t know if boosting a spell that clearly already has a following is a good idea.
In the end, I’m glad you love this spell, OP. I’m sure Larian are, too. What’s life for if not strong feelings?