It is actually much more like modern and cube Hollow One decks than anything else
[7] Example : Try building an offensive deck around Arrokuda and Cramorant
The card is so good it's banned in every format, and restricted in Vintage to just one copy per deck
Sylveon V #74 Pokemon Evolving Skies Keep track of your collection value over time
For removing the "Dark Contract" cards on the field, examples include using "Dark Contract with the Witch" to destroy itself or another "Dark Contract" before damage is inflicted, "D/D Lamia" or "D/D Lance Soldier" can send/destroy a "Dark Contract" to Special Summon itself from the hand or GY, "D/D/D Wave Oblivion King Caesar Ragnarok" can return a "Dark Contract" to the hand when battling, allowing it to absorb other monsters while "D/D/D Dragonbane King Beowulf" and "D/D/D Duo-Dawn King Kali Yuga" can destroy all Spells and Traps on the field
Thats a lot of good stuff for a single booster box, and if you look at it from purely a value perspective, its a no-brainer