Delayed Blast Fireball Foretell was a really cool design space with some interesting cards on offer, but I always felt like it was a bit limited at the same time
Ok Emet-Selch, Unsundered #218 (Magic Final Fantasy) Details All prices are the current market price
When you are reliably finding one and winning with it when you just have three then you don't overly need a 4th
They grow up so fast, don't they
This creates a Cataclysm type effect for only creatures, meaning each player ends up with only one creature, but since the "Enter the Battlefield" effect triggers next, that means the remaining creature each player controls is now the strongest creature which ends up also getting destroyed, effectively creating the Wrath of God / Damnation type effect
Keeping your creatures from dying is really important because you need them to actually be able to win the game, and Hibernation Sliver gives you a really good way to protect stuff