yh but do you really need ancestral spirit to pull this off. you can very well get a turn 1 alarm-obot with innervate, get molten giant on turn 2, use the coin and get that alarmobot out there again. your opponent will remove your molten giant if he can but you can get a second big guy because he wouldn't attack that alarm-obot. If can't remove your molten giant then he really doesn't have much to do anyway. though I can understand how useful an ancestal spirit is in this case.