You may have seen the floating sparks of mana scattered throughout Shen'dralas. This is a new phenomenon, likely the result of the damage the pylons have endured. We need this mana back in a semicrystallized form. We can accomplish this by using the Mana Sieve found within the temple. Borrow the sieve and collect any floating mana orbs you find. The temple's denizens will not appreciate their precious artifact being borrowed without their consent, but they will understand in time.