Upcoming cards and use of currency

Just wondering people opinions on upcoming cards. The next month looks mediocre for cards, tarantula almost looks best. Gold bundles are brutal because they're all season 3 cards, I may just be taking the topaz bundle. I just go on a whim everytime but trying to plan ahead and take useful cards. I usually just buy the cheap series 5 packs which is probably best but its nice to get new cards. What are you saving/waiting for?