You need the effect to lower ATK/DEF.
If Alien Shocktrooper battles a monster with A-Counter, provided you control another face-up monster that has the effect, the ATK/DEF reduction should occur.
I'm finding this guy to be very versatile in an Archfiend deck.You can either:
A) Tribute the tokens.
B) Combine it with Archfiend Palabyrinth to Special Summon since the tokens are Fiend type.
C) Combine with Call of the Archfiend, send high-level Archfiends to the Graveyard as the cost just to Special Summon them right back.
D) Combine it with Archfiend Emperor to fuel its destruction effect with the Archfiend cards you discarded.
OR A, B, C,and D. All at once.
