Subterranean Tremors is just too strong vs my goals for removal in the cube. If I was interested in modifying cards, I'd try it at and half the additional triggered effect costs, where I think it'd be perfect. But I'm not going to do that. Some candidate replacements are Conflagrate, Bonfire of the Damned, Fall of the Titans, and Release the Gremlins, but I want to get more games in with the cube before deciding where to go with this one.

I never actually put GO TO JAIL into paper, I just couldn't bring myself to sleeve it up. I really want to like it, but I just don't want games to come down to dicerolls -- getting mana screwed is more than enough RNG for me these days.

I'm really liking where is with artifacts, but want to give it some more options for recursion, so will give Auriok Salvagers a go.

Haywire Mite seems like a great versatile gamepiece in the cube. Fetchable with Urza's Saga, hits enchantments, conditional removal, AND it's a nice artifact recursion piece even if you're never activating it. My guess is it'll be here for a long time.