While its true youre going down on life, a dedicated mill deck thats looking to win from the graveyard absolutely would play an effect that said mill a card, if its not a land, lose a life for as much mana and in this case, life as theyre willing to spend
Given how positively jam-packed this deck is with Eldrazi, you can imagine just how often Ulalek will have your opponents groaning once it hits the battlefield
This might be thinking too optimistically, but I can imagine a situation where you swing in with Ukkima, exile a huge threat at the table, get 10+ counters on Ukkima, and then take someone out of the game with commander damage
How are we going to achieve this
While Astrograph Sorcerer is in the Pendulum zone, it can destroy itself to search the deck for Stargazer Magician and either place it in the Pendulum Zone or special summon it