With a hero limit of 3, doesn't it seem beyond risky to go multi-sphere? A two sphere deck would require you to have only one matching hero for one sphere and his loss would kill half of your deck as well. I can't even imagine using 3 spheres; 4 is an impossibility. Does anyone anticipate having much success with multi-sphere? What would it require, an overabundance of allies? Excessive healing? How effective can a multi-sphere deck be if it is primarily defensive in order to protect your heroes?
BTW, when a hero dies, do you get to keep his remaining resources or must they be thrown out?

(or worse, Tuesday). Anyway, went ahead and ordered 2x Core Set, good thing at least since they are now listing its availability as "uncertain".