grand archive mercurial heart booster box TCG Altered Edition Set Sealed English Grand Archive TCG: Mercurial Heart

You might fail your first action, sure

Its themed around Mew, but introduces a bunch of new cards that seem very deliberately designed to screw with the current meta

This is what they really need, something to use their deck destruction effects without fear 3 Level 6 monsters You can also Xyz Summon this card by using a "Vampire" Xyz Monster you control as the Xyz Material, other than "Vampire Nobleman"

Also, if a spell has an alternate casting cost, like Force of Will's pitch-ery, then if you cast the alternate costs, you get the spell for free without counting as your spell for the turn

Great for aggro, landfall, tokens, +1/+1 counter decks all of those are mega-popular in multiplayer so grab this last entry and then add it to like half of your Green decks moving forward