For the Beast from the Earth, I don't think a demon will ever be "blocked". I think the wording needs to be changed slightly, like "If a human hero is in battle,...". Also, I think this ability seems a bit overpowered if I understand it correctly. Basically, everytime they try to rescue with a single human hero (which is often), you just convert it to an evil character (something that doesn't happen often) and then draw two cards while forcing your opponent to as well. In other words, it seems like the perfect card for an Abom deck. Maybe limit the number of conversions per game to try to balance it out, I don't know. Just my opinion.