Magic Jamming

Magic Jamming (魔力妨害) is an Extra Skill used by Charybdis and its accompanying Megalodons. It disturbs the flow of Magicules.

Adaptation
As explained by the Dryad Trya (Treyni's sister), Charybdis' Extra Skill disturbs the flow of Magicules, making it strongly resistant to Magic and disturbs any external uses of Magicules.

Trivia

 * Coupled with its Ultraspeed Regeneration, this skill makes Charybdis very resistant to both magical and physical attacks, hard to kill with either, however Rimuru later notes that shockwave attacks would have been very effective and that if they had used that, they would have likely won against Charybdis without Milim's help
 * Rimuru acquired this Skill alongside Gravity Manipulation by consuming the core of Charybdis and later used Deviant to fuse it with Molecule Manipulation, resulting in Magic Manipulation
 * Besides Charybdis, the only other individuals known to possess this Skill (or an evolved form) are Rimuru and Frey