Majestic Mech - Goryu (DR04-EN196) - Dark Revelation Volume 4 Unlimited

You can summon this card by offering 1 monster as a tribute. When it summons by this way, Send this card to graveyard at the end phase of that turn. When this card attacks a monster in defense mode, if this card''s attack strength is higher than that monster''s defense strength, do battle damages to your opponent equal to the difference.