Eternal Life is quite cheap on the auction house despite how annoying it can be for normal folk to farm them, because Herbalists get massive amounts of Crystallized Life from picking flowers.
Living Lashers are the Wintergrasp mobs you're looking for, and they have roughly a 25% droprate. They're tightly packed, and though there are no Revenants for Crystallized Life, this will still be your best bet if you're willing to go into a PvP zone. Mossy Rampagers are your next best bet, which isn't saying much when it comes to Crystallized Life. Next best is still not great.
The Rampagers are a bit spread out, and they're mixed in with Basilisks. Downright unpleasant. The alternative is the Lashers in Sholazar Basin, which are mixed in with cobras, alligators, and are more spread out than the Rampagers. I do not recommend those.
Eternal Water Crystallized Water is a nice change from Shadow and Life, you can get it all over the place. Wintergrasp is, of course, the best place for it, but you can find it in just about every zone. You can fish it up, and Miners can get it from Cobalt and Titanium nodes. Below are some good spots for non-Miners to get their hands on Water.
Water Revenants and Glacial Spirits in Wintergrasp are your biggest source of Crystallized Water. I don't think this needs more explanation, we've done that already.
Icebound Revenants, which are basically smack dab in the middle of Storm Peaks at The Frigid Tomb, will be your next most farmable region for Crystallized Water. Aqueous Spirits on the Stormwright's Shelf in Sholazar Basin are a great farming spot as well, because not only is it a good source of Crystallized Water, it's also a good source of Crystallized Air and there are some daily quests in the area from the Oracles and Frenzyheart.
