Sorry for the confusion, but no, this is not actually an
attack!
You only get an 'attack' from the
Move and Attack basic ability, or
card text that specifically uses the word attack (e.g.
Crave Golem). This card text uses the word '
strike,' which means the
unit simply deals
damage equal to its
power (and
there's no chance for the opponent to
Defend, and you can strike Stealthed or
Airborne units, etc.)