It draws and discard cards, plus gives +1/+1 counters if said discarded cards were nonlands
If you can gain enough life with Beza, the Bounding Spring against decks that don't attack, one copy of Space-Time Anomaly might be lethal
Much like Nicol Bolas, its a card that can come down early, pose a substantial mid-game threat, and then help close out the game late
Its a smart approach since well save time if the first thing we measure is 70-30 centering thats a wrap (i.e
Banning Abuelo's Awakening over Omniscience makes sense because it would have limited WotC with future high-cost artifacts and enchantments, knowing they could be cheated into play for cheap
You get infinite black mana, infinite death triggers, and infinite sacrifice triggers by giving Mairsil undying until the end of the turn