Gallis the Star Beast [GX06-EN001] Super Rare Continuous Trap during your opponent's Standby Phase:

during your opponent's Standby Phase: You can inflict 300 damage to your opponent for each card your opponent controls

After that

•EARTH: During your Standby Phase destroy 1 face-up Defense Position monster you control

Take part in the ultimate battle between man-made monstrosities and the greatest predators nature has ever produced with the Machine Reactor Structure Deck and Dinosmasher’s Fury Structure Deck

Obelisk the Tormentor

Gallis the Star Beast [GX06-EN001] Super Rare Continuous Trap during your opponent's Standby Phase:Set: GX Tag Force Promotional Cards Card type: Effect Monster Rarity: Super Rare Attack: 800 Defense: 800 You can reveal this card in your hand to send the top card of your Deck to the Graveyard. If that card is a monster, inflict damage to your opponent equal to its Level x 200, and Special Summon this card from your hand. If it is not a monster, destroy this card.