A note on the Lawtia angel - she is in fact a nasty litte bugger to face (ask Shuuyu/ANIMEniac - who ran her in the tourny and scored second only being beaten out by Souldier's Falkow return), the trick is to use her only when you are well prepared - and to have a back up plan.
If you can set up a solid front line - her RNG 2 lets her sit in the middle row, a good place for her because with 20 hp three tanks getting free shots is not fun. A moonlight warrior and a crest regenerator boosted with Dryad makes a fairly sturdy wall. Norwieden slams for 50 ATK, which is only comparable to Leonardo at night and she never dies. She will likely be dropping a unit every turn, but back up plan you say? Yes, bring a Flesh Recycle, Counterattack and put Assassin as an SC - make sure if you are in a position to use her you use her *BEFORE* the assassin, because you can use the sin to remove her in a worst case scenario. Of course Counterattack is the way you really want to take her out - 50 damage field wide is nice, and if she got some shots in before she became a liability then kudos to that! What's the recycle for? Her again - though it will cost you 2 LP it's a third way to take her down (she gets 0 hp, tries to revive, you lose 1 LP and she closes -- then she goes to graveyard and you lose 1 lp -- something to note if you ever face her, Flesh Recycle A.S.A.P.).
She's not as terrible of a unit as she first appears, her ability means she always gets some action and with 50 ATK that's not action to be scoffed at. Barring Refess not many units will survive that. If you splashed Falkow (then your wall won't have the Dryad defense boost, as I don't recommend triple sphere just yet) then a Song Sorceress can speed up Moon and Soul to act much sooner than last leaving your enemies field crippled before they get to her.
The key to the angel is having her well protected, she's not a front liner. She's a very stubborn sniper who prefers to hide behind much larger allies.
I have built Lawtia decks using only the cards I got in my 2 boxes - and in both boxes the 5 star rares were Gowen and the 4 star rares did not come in large enough quantity to warrant use outside of SC line ups. I have still been successful with the deck - and it runs a lot of things people do not expect. The starter needs some love to work, and in my decks I try to avoid total dependence on night (only1 lycan, no wights etc.) so that I can be a terror at any time of day, but when nighttime arrives you best turtle up and hide.
However, there is something to be said for cards like Castle Wight - which is comparable to a Falkow tank in the day and is a totally different monster at night. I've seen Wight + Magic Weapon sitting in row 2 sniping my front line for 50 damage a round and 80 damage a night. It's as frightening picture, let me assure you.
Anyway, I'm rambling again. There is also a big long thread here somewhere about each sphere - Lawtia has one - skimming that thread may also give you some inspiration.http://www.alteil.com/forum/index.php?f ... =viewtopic
PM me and maybe we can hit up the training arena and I can show you my secrets