Aside from being a human, which is a very relevant creature type in Commander, Modern and basically every other MTG format, Esper Sentinel is good because it reads: Whenever an opponent casts their first noncreature spell each turn, draw a card unless that player pays X, where X is Esper Sentinels power. Its a bit like Rhystic Study, but the cost can be far higher if youve got things that make humans stronger or you can put +1/+1 counters onto Esper Sentinel
Watermark: Conspiracy Seal Illustrated by Christopher Moeller Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Banned Comp
I only play with fake cards
At the very least, you can use Sunflora as a substitute for many of the search and draw cards, and hopefully you will be able to capitalize on the advantage
This difference is important when comparing values between regions
Demon of Dark Schemes Demon of Dark Schemes is a pure death trigger, unlike the more expansive Aetherworks Marvel