god of war card sleeves "This Mine" The Board Game" + All Expansions Compatible Sleeve Bundle (8810 X 5) lasting protection Star Wars Unlimited Trading Card

You can only activate 1 "Surprise Chain" per turn

Shining CelebiNeo Destiny$627.40 Celebi Crystal Guardians$499.98 Leafeon VMAXEvolving Skies$381.53 Dragonite ex Dragon Frontiers$325.64 Venusaur exFireRed & LeafGreen$283.50 LedianSkyridge$183.89 Venusaur-EXXY Black Star Promos$183.05 Mega Venusaur exMega Evolution$156.04 SceptilePOP Series 4$149.99 GenesectBW Black Star Promos$142.71 ButterfreeExpedition Base Set$133.33 VileplumeAquapolis$122.49 Celebi & Venusaur-GXTeam Up$111.26 M Sceptile-EXAncient Origins$110.08 Meganium exUnseen Forces$108.47 Dark CelebiHidden Legends$105.73 Mega Meganium exAscended Heroes$101.38 Rowlet & Alolan Exeggutor-GXUnified Minds$99.72 Dark CrobatNeo Destiny$97.96 JumpluffAquapolis$89.98 ExeggutorAquapolis$89.69 Dark VenusaurBest of Game$88.16 WeezingExpedition Base Set$80.68 MukAquapolis$80.00

Essentially -- most of the time -- it doubles your mana production

And, admittedly, because I really wanted to add the other Cloud, who is pretty expensive