cheap japanese booster box High Class Pack: Tag All Stars [SM12a] Munkidori ex Terastal Festival: Booster Box (Case)

Decks that can easily send monsters from the field to the graveyard, such as Dragon-based decks or decks with strong graveyard recursion effects, would make good use of Felgrand Dragon's ability to gain ATK based on a targeted monster's level

Keep in mind that pack points are accumulated separately by expansion, so open booster packs from Fantastical Parade (B2) to get pack points for Umbreon ex

And that leaves poor old 4000 ATK Dragocytos Corrupted Nethersoul Dragon

The Dragon you fetch up goes into your graveyard, which is great for Bladewing, and while youre only meant to activate this once per turn, you can actually hold priority to do it twice for some fun combos like using Moltensteel Dragon to buff itself up and then becoming Skithiryx to deliver a fatal blow with ease

Chansey (Pulsing Aura) is not available in Rare Packs