The explosion can be heard repeatedly.
I cast fireball multiple times, at least 10. I have drunk 5 mana potions, and the C and D rank monsters are all obliterated and I gained new summons.
Out of 500, I have now 150 C-rank summons ad 350 D-rank summons. I feel satisfied with the outcome. I have more mana potion to spare.
Using lower-level magic to defeat high-level monsters. It was possible because I could cast 2000+ fireballs at a time, which completely drained my mana on the verge of being empty. No normal magician could cast this many fireballs at a time.
And in total, I guess more than 20 thousand fireballs were used to kill all the 500 monsters. So, if I have to make it in ratio then it would be 4 fireballs for one monster, 4:1.
Well anyway, I walked ahead and cross the second ring.
I have now more monsters than when I came here.
