I've built many decks along this theme in the past. Normally I use 1-2 copies of one of arsenic/vampire stiletto/discord, depending on what else is in the deck. With lycanthrope using entropy and darkness, I recommend changing the poisons to arsenics if you have them. If you don't, even a card like Hammer could fit in this deck, since it's 4 damage a turn for 2 quanta.
Using one of the sanctuary or morning glory could work, but I don't like using cards with that high a cost in this sort of deck. If you do want to use one of them, I'd take out either the freeze or a momentum for it. I've seen people put a lone Blessing in decks like this, but I don't really like creature buff spells in CCGs unless they're -really- big and/or cheap, like Chaos Power. That's more of a style thing, so if you're okay with a Blessing, that could fit instead of a momentum or freeze, too.
If you have rare weapons, a few possibilities are:
1) -2 poison +2 arsenic (arsenic costs only 1 more and has far more potential, but can be destroyed or blocked with shields)
2) -2 lycanthrope +1 discord +1 nightmare (discord screws monos, and nightmare is a fantastic card, as you can heal, deal damage, block the next draw, and give them useless cards. a good target is usually Shrieker, but odds are there will be something out you can safely nightmare)
3) -1 lycanthrope +1 nightmare or +1 vampire stiletto (see #2 for nightmare, and stiletto is very cheap damage and healing, though can be destroyed/blocked like arsenic, too, though it gets past more shields than arsenic. I often feel a bit naked without any healing, but again, that's play style)
If you don't have rare weapons, -1 momentum +1 hammer is also a possibility.
