I recently wrote a review of the butterfly knifes, and I mentioned this weapon, I really liked using this spear with sister Mary and Tommy, but I wrote in that review that you could make a blessish build with lily, but then I thought can you really build for bless with cards she takes?
Let's talk about the cards she can take.
Tempt Fate - this is an excellent card that not only helps fill the bag up with bless tokens, but it is also an automatic cantrip. The down side is that is also fills the bag with curse tokens as well. This card really shines in paradox build where using both benefits you. But with lily, it really doesn't benefit her at all.
Guardian cards-.there is not many options that she has, but their is a few.
1 - Book of Psalms- this is actually a really good bless generator, especially in horror heavy campaigns like tcu and ptc. But in this case, unless you have bandolier, it gets in the way of using the spear.
2- Blessed Blade, this is definitely not a weapon I recommend, but if you are stuffing the bag with tokens, you have a good chance of doing the +1 damage. It does only put 1 token in the bag per round. It still interferes with the spear.
3-Hand of Fate.- expensive in terms of resources, but a bless version of dodge, depending on the attack, it will yield 1-4 bless tokens. There can be times where this is more, but you usually want to use this when the bless payback is good. Which also decreases it's value somewhat, compared to dodge.
4- Holy Rosary(2) starting the lvl cards that generates bless token, this card is pretty good in terms of providing not only soak and a bonus Stat, but a somewhat reliable means to add tokens. The drawback is that it's not any will test, but only treachery cards. You can do this with any will treachery(weather it being you or your friends.)
5- Righteous Hunt(1). This so a good zone clearer. And depending on the horror it does, can provide a decent 1-2 blesses, you can easily fit this into a deck.
These are all the guardian cards I can see that generates bless, the rest of the bless token cards they have requires the token be already in the bag to actually do anything. So unless you Sister Mary, you don't have a reliable means of adding bundles of tokens to the bag. She also has lvl 0 mystic access, and there seems to be 2 cards that add bless tokens, but she may only use 1 of them(Tides of Fate). As Rite of Equilibrium is a lvl 5. Tides of Fate is very tricky to use, especially if you don't have ways of putting curse in the bag.
So, with the cards she can take, she is very hard pressed to fill the bag with bless tokens. BUT... thank God this is a co op game, where you can play with more investigators. I built a preston deck along side her that try to lean a little on getting clues, and adding some bless generation. There is no better feeling then playing Keep Faith(0) twice with Double,double(4) "8 bless tokens at once?! Yes please!!!"
So, if you have the means of generating bless, the spear will carry you. But I would not just take the spear as the only card that uses blesses, cards like Hallow(3) or Ward of Radiance(0) are stand out cards that provide decent support. But having cards like this as well as the spear makes taking bless tokens alot more worth the trouble putting them in,another example is in this preston deck, he utilize Ancient Covenant (2) so he can skate pass some test.
So the long and short of it is, this is a good meh weapon when you only meet the requirements and only use the bless tokens with the spear, but this weapon becomes extraordinary with additional bless tech. While lily doesn't build bless well by herself, with team work, she can be just as good!