Monitor Him Closely
"Tsk." King Baal got slightly irritated at the events on the Sky Bridge. The demons next to him, on the other hand, were mortified when they witnessed the combined powers of their Royal Mages fail to hold the fort against Moloch's assault.
While sand was supposed to be a fire retardant, the mix of oil and water within it had made the ongoing napalm fire grow fierce. The sand covered the area delicately so that the fire could not spread out. It had been a slightly complicated process that needed finesse, but Sandy had been able to further improve her control ever since she started to work with the Orcs and Goblins to create concrete.
To the onlookers, they thought that Moloch/Jin had another monster use some sort of wide-area magic like the Judgement Storm by Keyrin. The field of molten sand had burnt the army in the thousands, leaving nothing but debris from all the metal armour they had been wearing.