While many demons encourage you to use life as a resource, having to also pay mana in order to get the tokens and only on your own end step makes him feel a lot less powerful than he otherwise could have been
Disney Lorcana already has Starter Decks, but for this format, they would follow new rules and have their own "Commanders." In the case of Disney Lorcana , there could be multiple ways to approach a similar ruling to Commander, such as using up to two characters as "Commanders," thus determining either the Ink colors of the deck or the type of characters allowed in it (i.e., Hero, Villain, Dreamborn, Floodborn, etc.)
Its since gone on to become a mainstay of blink decks, with how easy it is to trigger the effect multiple times a turn
Yarok is 5-mana 3/5 with Deathtouch and Lifelink, and doubles your ETB triggers for any permanents entering, even on your opponents' board
One the fun things about Netrunner is that even when a card can isn't immediately useful, you can often pitch it for the icons