Gungnir, Dragon of the Ice Barrier [DT03-EN040] Ultra Rare XY200a Set: Dark Crisis Card type:

Set: Dark Crisis Card type: Effect Monster Rarity: Common Attack: 800 Defense: 1600 The ATK of this card increases by 500 points for every monster on your opponent's side of the field

Pay 500 Life Points each time this monster attacks

In that case

Set: EX: Sandstorm Type: Water Rarity: Common Retreat cost: Colorless

Gungnir, Dragon of the Ice Barrier [DT03-EN040] Ultra Rare XY200a Set: Dark Crisis Card type:Set: Duel Terminal 3 Card type: Synchro Effect Monster Rarity: Ultra Rare Attack: 2500 Defense: 1700 1 Tuner + 1 or more non Tuner WATER monsters Once per turn, you can discard up to 2 cards to the Graveyard to select the same number of cards your opponent controls. Destroy the selected cards.