My Apocrypha related casters are all weak and low level, so Jack makes me a little nervous (though ultimately David beat her down without too much fuss) but my team is basically perfect for swatting Avicebron like he's not even there.
I mean, it takes me like 7-12 turns, but he doesn't do any actual damage in that time
It could go faster if I replaced Merlin with some other hard hitter, but why take away 'zero chance of failure' for a few less turns
...well
with either two Astolfo or Astolfo + Amakusa he'd probably never get to USE his NP anyway