Mid Shield Gardna [TLM-EN024] Ultimate Rare ST-7 you can inflict 300 damage

you can inflict 300 damage to your opponent for each "Skyblaster" monster you control

or you're just starting to build your Extra Deck with cards from Duel Devastator

Set: Premium Gold: Infinite Gold Card type: Effect Monster Rarity: Gold Rare Attack: 500 Defense: 200 During either player's turn: You can send this card from your hand to the Graveyard

destroy all face-up monsters your opponent controls

Mid Shield Gardna [TLM-EN024] Ultimate Rare ST-7 you can inflict 300 damageSet: The Lost Millennium Card type: Effect Monster Rarity: Ultimate Rare Attack: 100 Defense: 1800 You can flip this card into face down Defense Position once per turn during your Main Phase. Negate the activation of a Spell Card that targets this 1 face down monster. At that time, flip this card into face up Defense Position.