Counterspell is the spell that makes enemy casters nervous. As a reaction, you attempt to interrupt a creature in the process of casting a spell — and if you succeed, their spell fails and they still lose the slot.
This Counterspell 5E guide covers exact timing, the automatic-success rule, the ability check for higher-level spells, upcasting strategy, and common table disputes.
- Spell Level
- 3rd
- Spell Type
- Abjuration
- Casting Time
- 1 Reaction (when you see a creature within 60 feet casting a spell)
- Range
- 60 feet
- Component Requirements
- Somatic
- Duration
- Instantaneous
- Class
- Sorcerer, Warlock, Wizard
How does Counterspell work?
You see a creature within 60 feet casting a spell and spend your reaction to interrupt it.
- If the spell is 3rd level or lower, Counterspell succeeds automatically (no check).
- If the spell is 4th level or higher, you make an ability check using your spellcasting ability. The DC is 10 + the spell’s level. On a success, the spell fails.
The interrupted spell is wasted. The caster still expended the slot (or scroll, if applicable under your table’s scroll rules).
Timing and what you need to perceive
Counterspell requires that you see the creature casting. Cover, invisibility, and heavy obscurement can block it. You do not need to know which spell they are casting — only that they are casting a spell.
At many tables, the DM announces “the lich begins casting,” which is your cue. If your group uses more hidden casting, clarify whether verbal/somatic components are obvious before the session starts.
Upcasting Counterspell
When you cast Counterspell using a spell slot of 4th level or higher, the automatic-success threshold rises with the slot. A Counterspell cast with a 5th-level slot automatically stops spells of 5th level or lower, and so on.
That makes high-slot Counterspells insurance against legendary threats — but burning a 6th-level slot to stop a cantrip is a disaster. Default to a 3rd-level Counterspell unless you have a strong read that the enemy is casting something huge.
When you should Counterspell
Stop concentration setup
Enemy casters love opening with Hold Person, Hypnotic Pattern, or Banishment. Counterspelling the opener often ends the scary turn before it starts.
Deny healing or resurrection-adjacent plays
In high-level play, interrupting a clutch heal or teleport can decide the fight.
Protect a downed ally
If a monster is casting a spell that will finish a friend, Counterspell is often worth the reaction even when the math is uncertain.
When you should not Counterspell
- You need your reaction for Shield or Absorb Elements in the next few seconds and the enemy spell is a cantrip.
- You cannot see the caster.
- The spell is harmless utility (Detect Magic out of combat) — save the slot.
- You already know it is a spell you want them to finish (rare, but sometimes an enemy Fireball into their own allies is free real estate).
Counterspell vs other defenses
| Defense | Action economy | Best against |
|---|---|---|
| Counterspell | Reaction + slot | Spellcasting |
| Shield | Reaction + 1st-level slot | Attacks / Magic Missile |
| Absorb Elements | Reaction + 1st-level slot | Elemental damage |
| Cover / Dodge | Movement or Action | Anything you can mitigate without a slot |
Counterspell is unique because it can erase an entire enemy turn’s spell. It does nothing against weapon attacks — keep Shield prepared if you are a front-line Warlock or Bladesinger.
Ability check math tips
For a 5th-level spell, DC is 15. A Wizard with +4 Int and proficiency in nothing special still fails often. Expertise is uncommon on the check unless a feature grants it; most casters rely on a solid spellcasting modifier and careful upcasting.
If you expect a legendary creature to cast 8th- or 9th-level spells, prepare to upcast Counterspell or accept that some spells will get through.
Frequently Asked Questions
Can you Counterspell a Counterspell?
Yes. If someone Counterspells your spell, you can (if you still have a reaction and meet the requirements) Counterspell their Counterspell. This can chain at high-level tables.
Does Counterspell work on subtle spell or innate casting?
If you cannot perceive the casting, you cannot Counterspell it. Subtle Spell and some innate abilities may not present clear casting cues — ask your DM how obvious the casting is.
Do you know the spell level before you Counterspell?
Often no. Many tables reveal the level only when the check is required. Upcast when the caster is clearly a major threat; otherwise default to 3rd level.
Can Counterspell stop a monster’s non-spell magical action?
Only if that action is casting a spell. Legendary actions and breath weapons that are not spells are not valid Counterspell targets.
