I've been spamming Bomd Levels and Strengthening/Interludes since beginning of the month and got him finally on the literal last summon of the year

During and before lotto I Bond leveled around 22 Servants (3*-5* but mostly 4*)

And did so many strengthenings that i am only left with a single one undone (couldn't so it bcs of Void dust..)

But hell f*cking yea got my target and am really happy that i have no need to summon on the apocryphia banner so i can save some for castoria

:D