Curse of the Crimson Throne
House Rules for Spell Casting
Concentration checks are out. If you want to cast a spell, you cast a spell. Only silence and counterspell effects can stop you.
Vanican Spell Casting. Spell preparation is not necessary. Nabila the first level cleric has two spells a day. Before going into combat, she casts Bless. During combat, she casts Cure Light Wounds. She is now out of spells until she rests again.