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Attack powers are intended to harm enemies and typically deal damage.

A power labeled "attack" in its power description is an attack power. If a power is not labeled either "attack" or "utility", it is an attack power if it has an attack roll or deals damage.[RC:90]

Attack powers can be gained in various ways, such as racial traits, class features, and gaining levels. A character can have a limited number of attack powers; at higher levels, new attack powers replace old ones. For all forms of attack power replacement, including retraining and power swap feats, the attack powers must have matching usages—at-will for at-will, encounter for encounter, daily for daily.

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