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You utter the words of the Old Kingdom Spell Invisible Fist and thrust your clenched right hand at the attacking creature. The beast is in mid-air when an invisible shock wave hits it squarely in the face and sends it spinning head over tail to crash heavily against the wall. Limp and unconscious, the beast slides down the moisture-slick wall and arrives at the bottom of the ramp in a tangled heap.
While it is still unconscious you turn your attention to the portal and examine its surface in an attempt to find a way to open it. Using your advanced Kai skills you are able to decipher enough of the runic text to discover the secret code which keeps it secure. Confidently you press a section of the surface and, just as you believe it will, it moves inwards with an audible clunk! Moments later the portal creaks open and you hurry through, slamming it shut behind you to prevent the beast from following in your wake when eventually it recovers its senses.