Forum:Please i need help

i want to ask some question... q1 : i have " the wicked avatar" on the field and at the battle phase, i attack my opponent monster with my avatar. at that time, my opponent activated " mask of weakness" to avatar. would the ATK of avatar decreased? since it's effect " The ATK and DEF of this card are each 100 points higher than the highest ATK on the field (except "The Wicked Avatar")"

q2 : can i give spell counter from " pitch black power stone " to the "allien" monster as an "A-counter"?

thanks