An anti-Cxyz card I've came up with

[BoricuaBeast]

Here's another random card from me. It involves countering an opponent's Number C or Cxyz plays.

Barian's Reversal
Normal Trap card

Lore:
"Target 1 face-up "Cxyz" or "Number C" monster your opponent controls that has XYZ material(s). Special Summon 1 XYZ monster that is attached to it as XYZ material and attach the other materials (if any) to that card, then return the selected monster to the Extra Deck. The monster Special Summoned by this effct has it's effect(s) negated and cannot be tributed or used for the effect of a "Rank-Up-Magic" Spell Card. Spell and Trap cards cannot be activated in response to this card's activation."