Nasty card flow in one smashing fun time but the cost keeps It out of my Top Ten proper
You potentially can also use the front side of Invasion of Shandalar to return massive finishers like Portal to Phyrexia or Atraxa to your hand, flip Invasion of Shandalar, and drop them into play on future turns, which sounds powerful if you can find the time to get it set up
References Emchompite
Whenever your opponent casts their first non-creature spell each turn, you may draw a card, unless your opponent pays X (where X is Esper Sentinel's power)
They have an ability that you need to tap them to use, and it reads, Choose a card name that hasnt been chosen from among Disenchant, Braingeyser, Terror, Shivan Dragon, Regrowth, and Black Lotus
In addition to the two new legendary creatures covered above, Jump Scare