Topic: "Enlarge" spell question

[alloowishus]

So the spell enlarges the character and increases size and mass but not strength. So what does it do exactly other than make them bigger? Seems kind of useless for a 10th level spell.

[Jengada]

I had this question a while back. Check out this thread: https://ironcrown.co.uk/ICEforums/index.php?topic=20786.msg241753#msg241753

[alloowishus]

Thanks, I think I may just make the person have all the stat and crit mods of a humanoid of equivalent size (for instance a 6 foot tall human increased by 70% would be as tall as Hill Troll, so give them all the equivalent stats of a hill troll). That makes sense to me, I mean it's a 10th level spell and all that happens is that you can carry more? That seems kind of useless.

[Jengada]

In that thread I posted, I didn't see anything about what I ended up doing in my own campaign. So for what it's worth, I ended up making a fairly significant change to the spell effect:
Size changes spells rely on the existing rules for giantism in Creatures and Treasures, affecting movement, OB, and DB. I decided that changing +/-30% does not modify any bonuses (really, no significant "size change"), +/-40-60% is a single size class change (+/-20'/rnd, +/-20 OB, and -/+10 DB), and +/-70-100% is two size class changes (+/-40'/rnd, +/-40 OB, and -/+20 DB). I also incorporated a rule from another system that says gear changes with the target, but if it leaves contact with their person, it immediately reverts to normal size.