Overall the set is impressive. I expected armies of massive robots and that's what we got. The only thing that makes me sad is how nerfed powerstones are. No need for that restriction at all and it prevents their use in eternal formats.
This is really bad for standard actually, almost no decent targets. What we really need is some graveyard hate lands to stop all the graveyard recursion in standard.
So luminarch was widely recognized as a huge design mistake, to the point it was nerfed in alchemy...and then basically just reprint it for next standard.
WTF WTF WTF
Protects itself, potentially kills something and you have to send your attackers at it.
Jin is actually pretty weak, I'd have him just above urabrask, who is always the worst for some unknown reason.
WTF WTF WTF