Basic Term
This is a basic term. This means it is a word or phrase commonly used in rule text to explain how things work.

An area of effect consists of spaces within a certain radius from the center. Almost all effects which happen in a particular region follow this method. Spells such as Fire Blast or Tornado and abilities like Frost Cone and Acid Breath affect squares within 2 spaces from where they are targeted, though other spells (such as Lightning Storm and Earthquake) may have a different radius.

The following box serves to point out area of effect spells and abilities:

Area of Effect
This uses an "Area of Effect". This means it affects all spaces within a certain radius of the target square.
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