That won't work. For example, you can't amp CotV@2
in response to Tinker and counter it.
I don't think I like this card because it seems bound for the sb right off the bat. I wouldn't want to cast this when the only creature in play is my Lodestone. The amping effect could be nice....or you might not have those cards in play, then what do you have?
For one more cc I'd rather play a card like Scarecrone, and I'd rather not play a card like Scarecrone.
And it has the potential to create and endless tangle wire lock.
Egads, at what cost? I'm tapping multiple mana sources and Tangle only affects me 1 card less. If I have multiple Tangles out I'd rather have a card to resolve that I can actually win with. Let's not forget that roughly 2 of the 4 mana needed to activate this card is going to cost you 2 life each time.
Edit: Wagner=faster at Chalice explanations. Woulda been nice though.