He gestured to where a small stone circle laid on the floor, with just about room for a single person to stand upon it. "For the final test, bind a barrier array to this circle. Once again, you have five minutes. As for the array itself, you may use a formula you know, or freestyle it if you can. The only hard requirements are that it must fit upon the stone circle, and have a length of at least 15. As long as it's strong enough—it doesn't necessarily have to withstand a Heavenly Rank attack—you'll pass."
"Very well."
I began to step forward. "Your time starts when you create the first symbol for your array. Begin when ready."