I'm curious to hear about Ancient Stone Idol.
Of course I should provide a link to my cube! I've included it in my sig now, so hopefully it will be more available moving forward. http://www.cubetutor.com/viewcube/77247
I have operated at different power levels at different moments in time, ranging from more Riptide-friendly to legacy. I'm currently running at high powered legacy.
I like the big robot a lot. I think he is, on balance, pretty similar in power level to Myr Battlesphere. Idol has more raw power, but the battleball is more abusable. The more fair your environment, the better battleball is, as you likely have access to more ways to get additional value out of him by blinking it, for instance, or by messing around with welding him in and out. The less fair your environment, the better Idol is, as he is, for instance, a better Sneak Attack target.
Idol has an interesting tension as well in that he can
go in a control deck as a big finisher, and the opponent's attack can help you to flash him in at reduced cost. (Of course, your attack can do the same, but I'm imagining that your control deck isn't much interested in attacking.) But he only blocks one creature, obviously; so on the one hand, the wider your opponent goes, the better that is for you in terms of Idol cost reduction, but also the worse it is for you in the sense that more damage is presumably getting through to you that way. I have certainly cast the card in a control deck, but the card is happiest being cheated.
I'm just now glancing at your list, and I would hazard that Idol isn't a good fit in your environment. A card that might be worth checking out is Meteor Golem
. He's a Spine of Ish Sah
on a stick. I ran him for a while at modern power level, and I wouldn't say that card was an all-star, but he consistently performed better than people typically expected.
Thanks very much for the kind words about the video series!