This means that opponents generally want to kill him in one hit - otherwise, you get to nicely build up your hand
I am not a huge fan of the Bloodbraid, in singleton formats it is really rather random and works very poorly with certain cards, let alone less efficiently in a lower average casting cost format
Dont worry too much about buffing its power for more expensive taxes: it turns out a Rhystic Study that can only trigger once per turn per opponent on noncreature spells is still pretty good
Excluding cards that had already been reprinted, Wizards said it would no longer reprint any cards from Alpha and Beta, no uncommon or rares from Arabian Nights and Antiquities, and no rare cards from Legends or The Dark
As for Random Encounter specifically, I love the idea of bringing in a creature like HecteyesHecteyes, TonberryTonberry, or CactuarCactuar onto the battlefield, like it was an actual video game
Putting the creature straight into play is what really makes this card powerful, and you might get some value out of sacrificing a creature depending on how you built your deck