Space Orb

"Nullification Array?" although Khal was not an expert on arrays, he could easily figure out its usage just from hearing its name alone. 

And just as he realized something, Khal glanced above before asking, "So you mean, those arrays above nullify the ones below them?"

"Exactly." Darla nodded before pointing at the symbol which she chose initially, "And those, that seem to be the right ones, are in truth traps."

"How?"

"It's easy. Just like how Nullification Arrays had been placed above several Trap Arrays, Element and Detection Arrays had been placed above those ones." Darla explained.

Khal seemed to understand what was going on and couldn't help but feel as cold sweat began to flow down on his back. Just now, he would have stepped on the symbol which previously he thought was harmless, bringing himself right into death's embrace without knowing a thing!