The first is a fun enters-the-battlefield (ETB) ability to make a 1/1 dork, which is good for the size and in the color of token enablers like Doubling Season to push that around
First, Ill provide some updates to the Satoru Umezawa deck I crafted when the card was first premiered
Now, like Eureka or Living Death or other similar, Mass Enters-the-Battlefield abilities, you often have to deal with a ton of triggers, so it can take a while to process
The eminence-powered cost reduction helps you get onto the board a turn earlier, and since your 99 is so powerful, Ive seen an Ur-Dragon deck eliminate opponents never bothering to cast it
One creative way to win with this card involves Endless Whispers, so if it dies, another player gains control of the card and loses