[@Savo] This character looks hilarious, I love the magic and look forwards to seeing what level of lecher you make him~

As for the spells you've listed, they're all fine on the same conditions as the rest of the people who have made trap and entanglement spells: they're fine as long as you give the target a post to react (unless they're dumb enough to stand on a pre-set trap; I'll be handling how traps work in a later post).

For Intertwined Mimic, the casting is fine as long as you specify that either a) the mimic uses the magical thread of its body to cast, which lowers its durabilty/shortens its duration or b) any spells cast by the mimic drain the original's magic reserves automatically. Additionally, the more damage that the copy has sustained, the less area that it will be able to cover with thread when it explodes.

Silk and Serenity is fine if you include a maximum amount that he can absorb (like he gets full as if he's been eating or something), and you further clarify what kind of 'fiber' he can absorb, since the word fiber relates to a huge swathe of things that would otherwise have nothing to do with his magic.

As for power level, this is fine for a B-class mage, feel free to add more advanced techniques as he advances as a character.

[hr]

[@Valor] It's not that you're not wanted, and I apologise if I came across that way! I am (as you can see by my post count) new to GM'ing on this site, and wasn't planning on starting a campaign that would be too much for me to handle. But I can handle a couple of extra characters, so if you are interested in staying, you are welcome to do so.