Protector Whelp of the Destruction Swordsman [DUOV-EN008] Ultra Rare

2 monsters If this card is Link Summoned: You can send 1 "Destruction Sword" card from your Deck to the GY, then, you can Special Summon 1 "Buster Blader" monster from your hand. At the end of your Battle Phase, if your opponent controls no monsters: You can target 1 "Buster Blader" monster you control that did not declare an attack this turn; inflict damage to your opponent equal to that monster's ATK. You can only use each effect of "Protector Whelp of the Destruction Swordsman" once per turn.