When you pick up a relic with the Egyptian hero Nakht, you can use this glitch. By transforming him into a raven and back using his hero power, the effects of the relic that he is carrying are reapplied, without removing the previous application. This can be used to achieve anything from 95% defense on all units to infinite range for ranged units. It all depends on the relic being used. It is important to note that if another relic is picked up during this time, the effects of the previous one still remain, in addition to those of the new relic.