rivals of the pharaoh booster box Duelist Pack (36 Packs) | Yu-Gi-Oh | Konami once for each head Yu-Gi-Oh! Duelist Pack: Rivals of

There are several cards out there that have an improved effect based on the number in your graveyard, and this is particularly true of the Knowledge

Forbidden/Limited List for the Xyz Festival: Forbidden: All Fusion Monsters All Synchro Monsters All Link Monsters Qliphort Scout Anchamoufrite Archlord Kristya Archnemeses Eschatos Archnemeses Protos Artifact Scythe Barrier Statue of the Abyss Barrier Statue of the Drought Barrier Statue of the Heavens Barrier Statue of the Inferno Barrier Statue of the Torrent Contact C Danger

Once you get past these pricey cards, the cost jumps down to 400 Pack Points, which is a bit more doable

As far as strategy goes with this card, I would make sure and stack your deck with the necessary trainers/supporters so you can get Flygon Lv