Like most Magic: The Gathering cards, the value of Voracious Greatshark depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Ikoria: Lair of Behemoths)
There are drawbacks to Hypergenesis as well, like needing to fill your deck with super-expensive cards that you aren't going to be able to cast fairly if your opponent can shut down your plan of cascading into Hypergenesis, which is a real risk in a format where Teferi, Time Raveler, Chalice of the Void, and Force of Negation are among the most played cards in the format
This 60-card deck kicks off with two Dual-Ink Holographic cards with Belle Mechanic Extraordinary and Beast Frustrated Designer
Sliver Hivelord is also a card that has rarely been reprinted, making it the second most expensive Sliver in Sliver Swarm
The Ur-Dragon's presence on the battlefield reduces the mana cost of your dragons and rewards you with card draw and free casting whenever your dragons attack
There are many options for the end of life of your cards outside of the landfill
