Spell power for Hit Dice without a heap of subspells

[temnix]

One of my spells is supposed to give 5 experience points to its caster, if the target is a monster with 1 HD or level. It should give 10 for a 2 HD monster and so on. Now, I can write the lot of these effects, running to 20 HD, let's say, and put the maximum-minimum HD in the effects' fields, but how do I target them? I would like to just direct them at Original caster, but then the max-mins will also be his sizes. Do I really have to make 20 subspells and make each of the effects here a Cast spell, Preset target, and then the subspell will have an Original caster-targeted XP bonus?

Edited March 31, 2022 by temnix

[subtledoctor]

I don't see what's problematic about it?

You could cast one spell, summon an invisicre, run a script and put the conditions in the script. But putting conditions in spells involves lots of subspells.

If you don't mind making 20 subspells, but only want one to be cast, gate it through 326 instead of the min_/max_level fields.