Hideous Laughter:
This spell afflicts the subject with uncontrollable laughter. It collapses into gales of manic laughter, falling prone. The subject can take no actions while laughing, but is not considered helpless. After the spell ends, it can act normally. On the creature’s next turn, it may attempt a new saving throw to end the effect. This is a full round action that does not provoke attacks of opportunity. If this save is successful, the effect ends. If not, the creature continues laughing for the entire duration. A creature with an Intelligence score of 2 or lower is not affected. A creature whose type is different from the caster’s receives a +4 bonus on its saving throw, because humor doesn’t “translate” well.
- 1 round per level duration
- Subject gets a new save every turn
- +4 bonus for not being humanoid
Seems balanced to me.
Hold Person:
The subject becomes paralyzed and freezes in place. It is aware and breathes normally but cannot take any actions, even speech. Each round on its turn, the subject may attempt a new saving throw to end the effect. This is a full-round action that does not provoke attacks of opportunity. A winged creature who is paralyzed cannot flap its wings and falls. A swimmer can’t swim and may drown.
- 1 round per level duration
- Subject gets a new save every turn
- Trolls are humanoid
Again, seems fine to me.
Both of these spells seem more or less identical to their D&D counterparts, even 2nd Edition Hold Person states that it works on humanoids. Maybe Trolls weren't classed as humanoids in 2nd Edition. In any case 2nd Edition Hold Person worked on groups of creatures and, if I remember correctly, didn't include a new save each turn.