Ancient golem, Uncommon, 80b
Unliving.
Attack: 40 + 10N
N = #Unliving in hand
Yes, at a cost of 80 bricks, it wouldn't matter WHAT this card did or how difficult it would be to pull off. I'd take it for
Reuse the rubble, at it would throw everything off balance. Heck, I'd put both cards in other decks in hope of drawing both, particularly building or 0-cost decks.
This can be solved by removing Unliving from the card, but then I wouldn't choose it for my deck, nor would it be summoned by cards that summon Unliving. Unliving requires 7 on hand to hit the keyword every other turn (or 7 on one play and 6 on the other), so there isn't room for keywordless cards that will sit on hand for a long time, at least not Rare ones.
An alternate solution would be to leave it as an Unliving card but have it cost something other than bricks as Reuse the rubble only factors brick cost in its benefits.