However, if you're only interested in ST16-004-shanks, buying singles is probably better
If this card is sent from the field to the GY by a card effect: You can target up to 3 "Sky Striker" cards in your GY, except "Sky Striker Mecharmory - Hercules Base"
(2023-02-04) If a creature with toxic deals combat damage to a creature or planeswalker, or if it deals noncombat damage, toxic has no effect and no player gets poison counters
You can obtain the following rewards: -1 Follower: 1 Gigantic Sparkle Structure Deck + 1 pack of Spright Elf Protectors/Sleeves -2 Followers: 1 copy of Spright Sprind, 3 copies of Swap Frog, 3 copies of Ronintoadin, 3 copies of Nimble Angler -3 Followers: 1 Spright Gamma Burst Wallpaper -4 Followers: 1 copy of Onibimaru Soul Sweeper, 1 copy of Number 29: Mannequin Cat, 1 copy of Number 65: Djinn Buster, 1 copy of Wind-Up Kitten, 1 copy of Herald of Pure Light, 1 copy of Cat Shark -5 Followers: 50 gems Rewards for followers that reach Bronze 4: -1 Follower: 100 gems -2 Followers: 50 gems -3 Followers: 3 copies of EM:P Meowmine, 3 copies of Deep Sea Diva, 1 copy of Sky Cavalry Centaurea, 1 copy of Pitknight Earlie, 1 copy of Pitknight Filly -4 Followers: 3 Legacy Pack Tickets (min
Do with that what you will, true believers
Meanwhile, Gold Bars are, appropriately enough, the most valuable of the currencies, in a very literal sense - they're the one that costs money to obtain (at least in one method)