Attacks with Formless Strikes active are less powerful than physical attacks, but are not affected by physical and/or blunt resistance. Damage through physical-immune statuses such as Invincible is also possible.
For this reason, it is best used against monsters that resist physical attacks, such as Elementals.
Attacks are considered non-elemental magical damage instead of Physical damage
Formless Strikes attacks still give the user and the enemy normal TP.
Attacks can be "resisted" and deal reduced damage, an effect likely determined by the opponent-player level difference.