Angel konan gives you a way to take fully advantage of water main's neurotoxin.

Talents: 22423 summon: koh/crab/tortoise S.mystery: pakkun

Try something like water main(1), angel konan(2), 1010 (4, for the critical tips) and haku (3).

Position on the board should change based on your tactic page, i even wrote down the order so you should be able to move them on the board on your own.

Edit: didn't realize it was necroposting, but w/e...