Bulbapedia:
PWO wiki:
ingame:
deals damage, increases all stats but drops!? spDef
Ancient Power inflicts damage and has a 10% chance of raising all of the user's stats excluding accuracy and evasion (i.e. Attack, Defense, Special Attack, Special Defense, Speed) by one stage.
PWO wiki:
Deals moderate damage and has a 10% chance of raising user's speed by 1 stage.
ingame:
deals damage, increases all stats but drops!? spDef