سيف البطريق

Equip only to a "Penguin" monster. It gains 800 ATK. When the equipped monster inflicts battle damage to your opponent: You can return 1 card they control to the hand. If a face-up card(s) your opponent controls leaves the field by a "Penguin" card's effect, and is now in the hand or banished: Until the end of the next turn, negate the activated effects of that card(s), as well as the activated effects and effects on the field of cards with the same original name. You can only use this effect of "Penguin Sword" once per turn.