when you have 2 or 3 monsters on the field, on the last turn you tribute summon BEWD then ritual summon Cu by using BEWD as the sacrifice. that way he's in the graveyard and you can use him to activate Cu's ability.
you can send unused ones to the graveyard, while keeping the ones you want to use in your hand. You can also set down 3 spells that you'll use on the field. I've tried this many times and no important cards needed will be thrown out lol.
i did everything like described, but get only 5400 points (without comeback victory) -.-
comeback and low LP definitely gives more pts than no damage victory. If you did tribute, fusion, ritual and did over 5k damage then i think it's around 6-7k already. It'd be better if you have some glossy cards too.
It's mainly used in earlier turns so you can get more spirit ryu's. Also, if you get lucky, she will summon a 1700 attack and 2200 attack which deals 3900 damage. Perfect for getting that extra score, so enchanted javelin can be used for that, just in case she doesn't summon those attack monsters and not end in defeat.
Oh my goodness this actually works, even with only 1 Spirit Ryu. Can farm Ishizu and finally beat stage 48 lol.