Counterspell and Non-Spell Abilities

Counterspell only works on spells. It cannot counter abilities, features, or effects that are not spells — even if they look similar to spells.

How Counterspell works: When you see a creature within 60 feet casting a spell, you can use your reaction to cast counterspell. If the spell is 3rd level or lower, it automatically fails. For higher-level spells, you make an ability check (DC 10 + spell level).

Cannot counter:

• Breath weapons (dragon fire is not a spell)
• Innate abilities (a creature's eye rays are not spells unless stated)
• Psionics (unless the rules specifically call them spells)
• Magic items that produce spell-like effects but don't explicitly cast a spell
• Class features (e.g., Channel Divinity, Ki abilities, Bardic Inspiration)

Key distinction: The trigger is specifically "a creature casting a spell." If the effect doesn't involve spellcasting — even if it creates fire, lightning, or other magical effects — Counterspell doesn't apply.

Identifying spells: To know whether an effect is a spell (and thus counterspellable), a character can use their reaction to make an Arcana check (DC 15 + spell level) to identify it as it is being cast. However, this uses your reaction, so you can't also Counterspell that same casting.