User blog comment:Helios193/Jack Knife deck/@comment-10483040-20150106154434

You will definitely need the 2 base cards. Jackknife Dragon and Jackknife "Berserker". While it would be odd to put this card in anything BUT a Gold Ritter deck, Jackknife Gift can help with Aggressors Soulguard if your keeping him in the center. If you don't want to go that route, Ultimate Buddy! can also help with Soulguard, but that would have to mean Aggressor be your buddy instead of Jack.