If you control a Psychic-Type monster: Apply this effect to all Psychic-Type monsters you currently control, for the rest of this turn. When a Psychic-Type monster you control battles an opponent's monster, after damage calculation: Banish that Psychic-Type monster, also banish that opponent's monster.
I use this card on duel school, active it but none of the monster that battle on that turn are banished. Am i missing something? IIRC 1st case is my monster destroyed by battle on opp turn, 2nd my monster destroying opp set card that has flip eff, 3rd is tie in atk on my turn. (still using ver. 1.4.0)