Thunder Dragoner, Jackknife "Overload" (RRR)

■ [Call Cost] [Put this card on top of a monster on your field & Pay 1 gauge]

■ If this card is on the field or in the soul of a «Neodragon», all cards on your field cannot have their soul dropped by your opponent's card effects. [Overturn] [During either attack phase, drop a hand card] Search your deck for up to one monster with "Jackknife" in its card name, call it on top of this without paying its [Call Cost], and shuffle your deck. [Soulguard]