If I've managed to play out an Impact Tremors and especially if I'm at a higher life total than my opponents, I might be happy to cast Storm Herd
The best one by far, however, is certainly Defiler of Vigor
Steam Siege Investment Guide A balanced set with moderate investment potential The Steam Siege set from the XY series offers a mixed bag of investment potential and collector appeal
Alternately, if you just want to crack packs, and you don't need any strangely sized boxes or stickers, go ahead and give this product a miss They're certainly not worth picking up at inflated after market rates, unless you're really desperate
Pokemon Card Strategy: So as far as strategy goes, since Krookodile's Ability needs to have Krookodile in the active Pokemon spot you'll want to make sure you can keep Krookodile out there as long as possible, so make sure and have three energy cards on it before you put it into the active Pokemon spot, then I would suggest using Thrash and doing 90 damage every turn to knock Pokemon out faster and using Potions and other HP restoring items to keep Krookodile alive longer, and if you flip heads hopefully the defending Pokemon won't have enough energy cards on it to attack