Defenses (Rules) (Player Core)

If a spell allows the target to attempt a saving throw or use their AC to defend against it, the type of defense is listed in the stat block. Any details on the particular results and timing of the save appear in the text unless the entry specifies a basic saving throw, which follows a standard rule. If a spell allows a defense only under certain circumstances or at a certain time, the Defenses entry is omitted, since the text needs to explain it in more detail. Whenever a spell allows a saving throw, it uses the caster's spell DC, and one that allows AC as a defense typically requires a spell attack. More information on how to calculate your spell DC and spell attack modifier appear in the links.