Concentration

Some spells require sustained focus to maintain their effects. These spells have "Concentration" listed in their duration.

Rules:

• You can concentrate on only one spell at a time. Casting another concentration spell ends the first.
• Concentration can last up to the spell's listed duration; you can end it voluntarily at any time (no action required).
• Normal activities (moving, attacking, casting non-concentration spells) don't break concentration.

Constitution saving throw (damage): When you take damage while concentrating, you must make a Constitution saving throw to maintain concentration.

• DC: 10 or half the damage taken, whichever is higher.
• If you take damage from multiple sources (e.g., multiple missiles), you make a separate save for each source of damage.

Other ways concentration breaks:

• Being incapacitated or killed.
• Being affected by certain environmental effects at the DM's discretion (a crashing wave, being thrown from a vehicle).
• Casting another concentration spell.

Tips for maintaining concentration:

• The War Caster feat grants advantage on concentration saves.
• High Constitution improves the saving throw modifier.
• The Resilient (Constitution) feat grants proficiency in Constitution saves.
• Staying out of harm's way reduces the chance of being forced to roll.