I should probably update everyone on what's happening with this deck.
I can think of a couple. Maybe Havoc Festival, Revel in Riches, or Master of Cruelties?
I did add
Revel in Riches and
Master of Cruelties after this post. In my testing they work alright, but I'm not sure how they will fare in a proper game. I don't want to risk using
Havoc Festival. I've seen other people play this card and they lose... every time. I am not nearly a good enough aggro deck to make this card work.
Sadistic Glee or Blade of the Bloodchief would allow Judith to start swinging for lethal after a good wipe or two to help close out the game.
Vicious Shadows would similarly allow you to quickly kill people off after any given wipe.
Sadistic Glee and
Blade of the Bloodchief would make this a completely different build. I would need to take out at least 8 creatures to make Judith lethal in two hits. Anything less and it's three hits. That gives a lot of time for my opponents to prepare. I'm not going to use them for now but I may revisit it.
Eye of Vecna and Greed are pretty good ways to draw when you need it.
Magar of the Magic Strings allows you to keep repeating your spells, including your draw ones, as your 3/3s will have no problem getting through when you're constantly spamming wipes.
I was already thinking about adding Magar, and this was the last little bit of encouragement I needed.
Greed has also been added in, as I've had good results with it in the past.
Eye of Vecna I definitely won't use. I do not want to pay an extra 2 mana each turn and 2 life for only 1 card.
Phyrexian Arena gives a much better rate, and even that card I'm on the fence about.
An other approach could be an Orzhov version of this deck. Play around life gain with cards like aetherflux reservoir, aria of flame, bloodthirsty aerialist (multiple +1/+1 for each creature damaged) or marauding blight-priest.
It can be amplified with Blitzwing, cruel tormentor, defiant bloodlord, epicure of blood or exquisite blood.
This is also a completely different build. The lifegain from Judith is inconsistent and pretty small (unless I do end up adding
Blasphemous Act). Certainly not enough to make a lifegain theme out of it unless I completely rework this deck.
Thought of another card you may want to consider, Flick a Coin.
Did some playtesting with this early on before I posted the list. I wasn't a fan. Three mana is a lot and while it does a lot of things, none of them are worth three mana.