Spellcasting
Spellcasting in the 2024 SRD is built around a few core concepts: prepared or known spells, spell slots, cantrips, components, casting time, and concentration. Once those are understood, most class-specific magic reads as a specialization rather than an entirely separate subsystem.
Reliable at-will magic that defines a caster’s baseline turns when resources should be conserved.
The main resource currency for leveled spells. Slots shape pacing, risk, and when a caster chooses to escalate.
Some casters tailor their list day by day, while others carry a narrower identity defined by a smaller set of spells.
Verbal, somatic, and material requirements are part of how the spell is cast, not decorative text.
Instant, sustained, or concentration-based durations decide whether a spell is a momentary effect or an ongoing commitment.
Class and equipment details often determine what can stand in for material handling and what must still be tracked explicitly.
Read timing first. Casting time tells you whether the spell fits the turn you want. A strong spell with the wrong timing can still be the wrong call.
Protect concentration. If a spell demands concentration, the caster needs positioning, defense, or support that helps keep the effect alive long enough to matter.
Scale by encounter importance. Spell slots are a pacing tool. The question is not just whether a spell works, but whether this is the moment worth spending it.
Check the compendium entry, not memory. Small wording details in range, target, or duration often matter more than players think they will.
Can this be cast right now?
Check timing, available slots, components, and whether the caster can currently speak, move, or manipulate what the spell requires.
What ends the effect?
Duration, concentration, successful saves, and line-of-effect issues often matter more than the headline effect text.