gm-spellcasting

name	gm-spellcasting
description	D&D-kit spellcasting mechanics — spell slots by level, casting resolution, and concentration. Load when a player casts a spell in a dnd5e-kit campaign. Spawn the spell-caster agent for spell details. Non-D&D kits use their own ruleset magic systems.

Spellcasting Mechanics (D&D kit)

When a player casts a spell: spawn the spell-caster agent for details, check slots, resolve.

• Attack spells: d20 + spell attack bonus vs AC.
• Save spells: target rolls save vs spell save DC.
• Utility: apply effect.

Spell Slots by Character Level

Lvl	1st	2nd	3rd	4th	5th
1	2	-	-	-	-
2	3	-	-	-	-
3	4	2	-	-	-
4	4	3	-	-	-
5	4	3	2	-	-
7	4	3	3	1	-
9	4	3	3	3	1

Concentration

One concentration spell at a time. On damage: Con save DC 10 or half the damage (whichever higher) or lose it. A new concentration spell ends the previous.