Sebastian's last gasp plan D was entirely dependent on his luck!
This was the main reason why he called the plan a last gasp plan.
For him to resort to using this plan meant that cunning, and stealth infiltration no longer worked, and since he could win against neither the Chief Councilor nor the Ancient Basilisk in a brute strength contest, he resorted to luck.
Having witnessed the power of luck in numerous locations, most especially when he was chased by Tonado and the other predators when he killed the longevity fish, he knew how powerful it could be.
In Oceania, luck was not superstition, it was a real tangible force of nature that could influence things in a lot of mysterious ways.
Since conventional ways could not work anymore, this was why Sebastian resorted to the more mysterious ways of luck.
I met the quota today, so kudos to me lol. Honestly, thanks for sticking with me for so long, I really appreciate it, you guys are honestly the best!