Jackknife "Thunder Storm"

<Dragon World> [Call Cost][Pay a gauge & put this card on top of a unit with "Jackknife" in its card name] [ACT](RC)[1/Turn]:[COST][Pay a gauge], choose one of your opponent's front row rear-guards, and retire it. If your vanguard is armed with a card with "Gold Ritter" in its card name, this unit gets [Power]+10000 until end of turn. [CONT]:[Soulguard] (When this unit would leave a (RC), you can put a card from this unit's Buddy Soul into drop to have it stay on the (RC)