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
To overwhelm them with your endless horsey determination , you need some mana rocks
For example, if one of the cards is a creature card, you can cast that card only during your main phase while the stack is empty
While it doesnt have the enduring popularity or appeal of these two franchise-carrying Dragons, it was still the iconic Dragon from the first set of Magic, and its entirely possible that it laid the foundations for Dragons in TCGs to be popular and powerful and desirable
Cycling Payoffs Spells with cycling have touched many of Magic s formats, but they wouldnt be as successful as they are without payoff cards