Hey guys, Wizards just put this video up on youtube. I can't screen capture it, but it shows that the Hero cards for the JOU events are now "Hero Artifacts - Equipment", and can be seen (perhaps incompletely) towards the beginning of the video.
Also in the video is what appears to be the green prerelease card, Heroes' Bane
it's a 0/0 Green Hydra Creature for 3GG
"Heroes' Bane enters the battlefield with four +1/+1 counters on it. 2GG: Put X +1/+1 counters on Heroes' Bane, where X is equal to its power."
Also in the video is what appears to be the green prerelease card, Heroes' Bane
it's a 0/0 Green Hydra Creature for 3GG
"Heroes' Bane enters the battlefield with four +1/+1 counters on it.
2GG: Put X +1/+1 counters on Heroes' Bane, where X is equal to its power."
https://www.youtube.com/watch?v=Z9V15bUJQAk
Edit: Mods, there's another thread up about this. Please take this one down.