As long as he didn't care about the consumption of mana, the imaska scepter could even increase the power of spells by ten times.
A simple spell, under the enhancement of the imaska scepter, could achieve a terrifying killing effect.
The ball of extinction that had forced garen to use all his means back then had been enhanced by the imaska scepter, which was why it had the terrifying power that even the time freeze area could not restrain. Of course, its ability was not unlimited, and the huge consumption of magic power and the burden on mental strength was a big problem.
If an ordinary spell caster were to use a spell that increased the power by several times, their body would probably be sucked dry.
When garen obtained the secret weapon in the Faerun continent, he had already tested its effects and knew it like the back of his hand.