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
One card which did not exist yet when I wrote the article was Ledger Shredder as I alluded to in the article, the synergies with Mishras Bauble will only continue to increase over time, and Ledger Shredder is a good example of this
Goblins are always popular in the format, and this card saw an impressive 58.28% increase on its starting price, and could continue to climb as more people seek to deck out their goblins
Now i dont really need Mogis to be a creature but thats a plus
Either way, combat ensues and you, the Boros player gain the advantage