the lost caverns of ixalan draft booster box 3–4 Uncommon 3x Lost Caverns of Ixalan

Seaking is the evolution card for Goldeen, so it cannot be played on the first turn

So, which are the most valuable cards in Phantom Nightmare

#001 Rowlet & Alolan Exeggutor GX Foil #054 Raichu & Alolan Raichu GX Foil #126 Mega Sableye & Tyranitar GX Foil #214 Rowlet & Alolan Exeggutor GX Foil #215 Rowlet & Alolan Exeggutor GX Foil #220 Raichu & Alolan Raichu GX Foil #221 Raichu & Alolan Raichu GX Foil #225 Mega Sableye & Tyranitar GX Foil #226 Mega Sableye & Tyranitar GX Foil #237 Rowlet & Alolan Exeggutor GX Foil #241 Raichu & Alolan Raichu GX Foil #245 Mega Sableye & Tyranitar GX Foil

Set: Structure Deck: Rise of the True Dragons Card type: Normal Spell Rarity: Super Rare Target 1 Level 7 or 8 Dragon-Type monster in your Graveyard

Then later you can tap it and a mana to give your leader or another legendary fear

It wasn't played often enough, playing it rules out other cards, and it is never making a main deck so kind of feels like a utility land pick