Fiery Serpant 2/3 Brown TC enh
"Place on a hero. That hero is poisoned and decreases /3 every turn. Holder may discard any number of ees from hand to poison up to the same number heroes."
Isaiah 14:29
Highway 
EE
Set a human evil character aside for three turns. On return evil charater may band with another human evil character of a different nationality.
Isaiah 19:23
Fiery Serpent should say 0/3 (at least I assume that's what you meant). Second, maybe it should be like this: "Place this card and any number of Evil Enhancements from hand on different Heroes. Selected Heroes are poisoned and decrease 0/3 per turn while enhancements remain." That effectively accomplishes the same thing, but is somewhat clearer as to what is going on and how to stop it.
I like Highway. It should probably be multicolor (so that anyone could use it, but it won't be abused in T2), and it should say "On return, Evil Character gains the ability to band..." since as written it would seem as if you'd have to band during your upkeep phase. Also, the nationality part is a nice idea, but it may be somewhat impractical: Would Judean be a different nationality than Israelite? Is there a difference between OT Israelites and NT Jews? Etc...That said, I think "different brigade" would suffice.
Otherwise
