Alanor's plan was simple, yet difficult in the same vein. First, he needed to get her explosive near the S-ranker. And not just one, but all of it at the same time, as the resulting explosion would be large and strong enough to cripple the man.
To accomplish that, the usage of something to cover the explosive would be required, plus better illusion. For the former, he get Fiora to aid him, using her plants to cover his explosive.
For the latter, Ionin came in clutch. Her illusion was good enough that the S-ranker did not even notice the presence of the plant until it was a too late.
Yet, even as the explosive engulfed the S-ranker, Alanor did not dare to believe the man is dead. Doing so before she could see the corpse is the height of stupidity. So, to ensure the man is as dead as he could be, she belayed the order,
"Fire everything you have at him!"
