With an explosive speed, I leapt straight towards it. Making use of the magical energy
spilling from it, I Strengthened myself. Then, relying on my sharpened senses and
reflexes, I slipped through the gaps between the thorns, modifying the form of my
scythe slightly to deliver a powerful strike.
Altogether, seven tentacles were cut apart.
Spinning again, I brought the scythe down once more.
The magical energy pouring out of that creature was so vast I almost hesitated to take it
in. But even as I felt my Magic Circuits and nerves begin to corrode at the contact, I
didn't. There was no reason to hesitate. This was as a desperate last stand - I couldn't
afford to leave room for regrets.
Svin also grabbed a nearby tentacle, using his strength of his phantom body to tear it
apart.
"Don't think you can just finish it," my master called out from behind. "If you try to
wield too much magical energy at once, you'll just stimulate the main body to further
action. Wait for Flat's analysis."

The Case Files of Lord El-Melloi II, Volume 3, Chapter 3, Part 5