this effect activates at the end of (each) of your opponent's Battle Phases: Discard 1 random card from your opponent's hand.
I have this and i think there is a bug in this card!. this card only works for one battle phase and it should works each battle phase !!?
Only reasons I can think of: Wasn't destroyed by battle, or it was destroyed by battle with a monster that negates effects of monsters it destroys, or had an equip spell like the Baou Sword to do that.
"f your opponent chooses not to conduct a Battle Phase, there is no timing for the end of the Battle Phase, so the effect of "Helpoemer" is not activated. The same is true if the Battle Phase is skipped due to a card effect."
The effect only activates every time your opponent goes into Battle Phase, and does not activate on the turns where your opponent does not go into Battle Phase.