But that shocking firepower also came with equivalently huge mana consumption.
When a mage used Fire Arrow, they would at most summon one or two flaming arrows. Even with the support of a metamagic, they would only be able to cast a dozen at most. It wasn't because they were unable to cast more, it was because they weren't willing to. Each added Fire Arrow would increase the mana consumption as well as make controlling the spell more difficult.
Someone like Lin Yun, capable of casting a hundred flaming arrows in one Fire Arrow cast was something that any Great Mage would never even thought possible. After all, this magnitude made the spell a hundred times harder to control and consumed hundred times more mana. Even if it was originally only a low tier Mage Spell, after being layered a hundred times, the consumption and the control difficulty reached a frightening level.
