It's strong for the same reason that Growth Through Sacrifice is strong in a way that's not obvious at first glimpse. It's a gamble you need to be careful about (though bear in mind that Tipping Point has been removed from the game), but odds are you'll get multiple useful effects that round, plus the cards add to the thresholds of your innates and any other Majors you played that round, and you get to keep them. Even if you hate them, you can forget them to gain Majors or for Events.