Medium of the Ice Barrier [HA02-EN012] Super Rare GR that specifically lists the card

that specifically lists the card "Dark Magician" or "Dark Magician Girl" in its text

You can only use this effect of "Beta The Electromagnet Warrior" once per turn

also negate the activated effects of monsters that were in Defense Position when that effect was activated

destroy the selected monsters

if you Tribute 1 monster on your side of the field

Medium of the Ice Barrier [HA02-EN012] Super Rare GR that specifically lists the cardSet: Hidden Arsenal 2 Card type: Effect Monster Rarity: Super Rare Attack: 2200 Defense: 1600 If your opponent controls 4 or more cards than you do, you can Special Summon this card from your hand. Your opponent can only activate 1 Spell Trap Card per turn.