See Panopoly. See Ruminate. See Contingency. See Alacrity. See Sustenance.

The wording on this is a little off, since it could be interpreted to mean, for example, "whenever you would die, instead exile your graveyard, whether or not you have one." And I'm pretty sure that wasn't what you were going for.

Was this supposed to give you four outs before the hammer falls? Or was this supposed to exile everything in one pass? Or perhaps it was two outs? Everything before the 'or' or the one thing after it?

Interesting. This basically buys you at least one extra turn most of the time, right? I think the cost for staying alive should increase, though you'll lose the aesthetic of it being 6-6-6. Something like 10-20-6?

No, this buys you "You cannot lose due to life loss" for ten turns - though after 8 or 9 it'll be a foregone conclusion that you're going to lose because you;ll have to start exiling from play.

Hmm; actually, with the current wording, it might be a couple turns fewer, since you cannot "Exile 4 from graveyard and two from library"

Well, it doesn't say nontoken permanent and it doesn't say "cannot be played in a Battle of Wits deck", so there are two ways to go over ten turns right there. :)

This seems to be a quite robust Lich variant; and due to the fact that you will get multiple turns out of this I would cost it at a higher converted mana cost as well.

Ok, true - but if you have an infinite token swarm; shouldn't you have won by now? Having a ginourmous library is kinda a funny option, though.

I agree it's a bit cheap (in both meanings of the word). But the lich comparison is presumably part of the point, and actually you don't want to drop this before the turn you first need it anyway - since it just gives an opponent more time to deal with it. So it's probably not hugely problematic that it might be able to save you due to messing up on turn 3.

It does let you turn 'pay one life' into 'exile 6 cards' - but I doubt that's a problem either.