Frierenfesseln (凍てつく足枷(フリーレンフェッセルン) Furīren Fesserun) is Reinforce Zwei's [[:Special:Ask/-5B-5BCategory:Spells-5D-5D-20-5B-5Bspell-20category::-5D-5D-20-5B-5Bspell-20type::-5D-5D|cage-type capture spell]] that creates a ring of swirling water around the target, then suddenly freezes it into an icy prison.