Area of Effect needs to be its own attack type so that it prompts a Dodge Roll from the target, they press the button, and it then makes a Toughness check (or the appropriate defense check) versus the full effect value if they fail the defense check and half of the effect value if they made it.
Area of Effect needs to be its own attack type so that it prompts a Dodge Roll from the target, they press the button, and it then makes a Toughness check (or the appropriate defense check) versus the full effect value if they fail the defense check and half of the effect value if they made it.