If a triggered ability triggers at the same time that Karakyk Guardian deals damage for the first time, targets for that ability are chosen after Karakyk Guardian no longer has hexproof
Vampires: Vampires also has a ton of upgrade possibilities, with plenty of tribal support from older sets
Losing two cards sucks, especially in a four-player game where youve stopped one other player and the other two are just celebrating, especially since youre almost never using this to protect your own win, but youre playing blue so you dont just lose to a turbo deck with a good draw, and this is what it takes
But it is definitely not a sure thing, and it is certainly not something that is going to make you a lot of money in a short amount of time
This is approaching wholesale booster box levels, so proceed with caution
Quite frankly, I think it's worse than Seedborn Muse except in a particular few decks