For those unfamiliar, MTGs Secret Lairs are a way for unique art styles, odd themes, and seriously kooky IPs to join one of the best card games in a way they might not be able to in a full set release
Scaretiller For four generic mana, you simply have more efficient ways of getting lands out from your hand or the grave than this
They are typically created by people making alters or proxies
(If it would be dealt damage or destroyed, remove a shield counter from it instead.) If an Aura is put onto the battlefield without being cast, the Aura's controller-to-be chooses what it will enchant as it comes back onto the battlefield
What is Foundations Jumpstart
Finally, the most common Mana Value in the decks I build is three, which means if I don't get to three mana, I probably can't really play Magic