While buying singles is usually the most reliable path to the priciest chase cards, those increasingly high price tags make hunting them through booster boxes like these the best option
If you do activate it, you can make an attacking creature unblockable, including Taeko himself
While the competitive player might say that he played T1, T2 or Extended, for example, the casual player might not be sure what to answer if someone asked him which format he played
If the spell is countered, it will go to your graveyard and never hit exile
This allows you to use life willy-nilly on things like Aetherflux Reservoir and Necropotence
It enables turn 2 kills in the deck, but in turn makes it far weaker to removal spells