10/04/04 If you have zero or negative life, half your life is zero, so it costs nothing to use the ability
In other words, a deck like this Lucario ex would reach its full potential with a control strategy , rather than relying solely on brute force
From this perspective, you should buy every Secret Lair drop, whether you actually want it or not, knowing that you'll basically break even most of the time, while not-that-infrequently, you'll hit an above-average drop and double your money
This not only excels in board stalls, but it also makes it extremely hard for an opponent to try to race you
Overall, it seems that Wizards has mostly learned its lesson from Daybound and Nightbound
My final issue with this card is its cmc: yes, Yawgmoth's Vile Offering is fairly costed, but I don't really want its effect at 5 cmc