On Judas, I'm not sure we can make him a hero. Biblically, there is no account of him individually doing good works or learning from his rabbi. In fact, it is stated in the Gospels that he was a thief the whole time (or at least before Mary washed Jesus's feet with perfume). Was he ever really a hero, or was he always the serpent among the disciples? We can have that discussion, but I'm not sure there is a biblical basis for him to be printed as a hero.
How about working on Matthias instead?
On Thirty Pieces, I am against conversion of heroes in general, and outside of battle in particular. What cards we have are with a lot of limitations.
1. They have specific character targets (like with Adonijah and Witch of Endor).
2. Broader cards still have limited targeting (Number of the Beast can only hit non-prophet Gold, and Angelic Rebellion can only hit angels, and can't hit some of the best at that) or can only hit captured heroes (Ashpenaz).
3. Others are not permanent (like Evil Spirit and Forbidden Fruit [which only hits Red, fits in #2]).
4. Of all the evil converts, only
one has any CB-, and even that is conditional (Corrupted, must have an occupied site, then CBP by good). Corrupted is also the
only card that can target
any human hero without it having to be captured.
So you can see that there are a lot of limits placed on evil conversion, and for good reason. It is extraordinarily powerful and can destroy offenses quite quickly. An artifact is not something I would like to see this kind of ability on, as it is so hard to target and can be used outside of battle with impunity, while you would still have little to no chance of stopping it in battle. If there is to be more evil conversion, it must be in a form that can be interrupted or negated (at least) during battle, and only able to be used in battle.
