Changes

Most spells require a single [[SRD5:Action|action ]] to cast, but some spells require a bonus action, a reaction, or much more time to cast.

A spell cast with a [[SRD5:Bonus Action|bonus action ]] is especially swift. You must use a bonus action on your turn to cast the spell, provided that you haven’t already taken a bonus action this turn. You can’t cast another spell during the same turn, except for a cantrip with a casting time of 1 action.

Some spells can be cast as reactions. These spells take a fraction of a second to bring about and are cast in response to some event. If a spell can be cast as a [[SRD5:Reaction|reaction]], the spell description tells you exactly when you can do so.

Certain spells (including spells cast as rituals) require more time to cast: minutes or even hours. When you cast a spell with a casting time longer than a single action or reaction, you must spend your action each turn casting the spell, and you must maintain your [[#Concentration|concentration ]] while you do so (see “Concentration” below). If your concentration is broken, the spell fails, but you don’t expend a spell slot. If you want to try casting the spell again, you must start over.