I don't know if it was me uninstalling and reinstalling or upgrading my computer, but I'm not having crashes anymore. I went ahead and opened the rest of my set 1 and set 2 packs since they're not limited-legal anymore and got some nutso legendaries (and rares, for that matter). Some are clearly the sort of thing you'd have to build around (Gront the Infinite, a goblin who every turn gives every other troop a permanent -1/-1 and gets a permanent +1/+1 whenever any troop dies, 6 cost), some are just...nuts. I now have I think two or three High Tomb Lords, which are a 5 cost 0/0 that get +1/+1 for every card in any crypt - the scaling gets real crazy real fast, especially if you're running, say, Psychic Torment. And 3 Vampire Kings, which seem to be a really popular pick for Blood decks that I was afraid I was going to have to pay top dollar for at auction. And so much other loveliness. No dragons, alas. Oh, and I was really happy that, in my very last few set 1 packs, I did manage to score a Lord Alexander, The Courageous. I have both of the other Triumvirate members and would have been sad if I'd managed to miss out on the third.
Also ran up a Vennen Cleric and a Human Warrior through the first dungeon to get Ardor Day drops (two cards, no equipment so far) and while the untuned Vennen deck was frustratingly chancy and poor at egg-gen, pushing some rares and legendaries into it (not to mention some milling) and pulling a few dead cards has made it a hilarious, lovely deck with horrifying combos. I had a game, for example, where I had out a Vile Eremite (damage to the enemy champion whenever a Spider enters play), an Arachnomancer (optionally draw when a spider comes into play), a card whose name I forget that mills the enemy whenever you draw cards, Psychic Torment (mill the enemy whenever they take damage), and Darad the Scourgeblade (who mills the enemy whenever he attacks and is mostly unblockable). Combine that with a few egg generation methods and a Hatchery Cultivator or two to pump the amount of eggs and I had routine turns where I'd mill them some, generate spiders, hurt them and draw cards and mill them more from both of those, get more spiders, hurt them, draw cards, mill more... the combo was much heavier on damage and milling than eggs, so this wasn't a one turn win of a loop, but still. beautiful.
Looking forward to seeing what I can do with the human deck now that I have a bunch of their leaders.