Isn't the first esper you encounter in the mines of Narshe named Tritoch
There are many aspects of a playable card here, so let's start with the obvious, the Darkness typing
Suddenly Broken Meanwhile, you can look at things from the opposite side of the spectrum, where a card can underperform or not really show up anywhere then suddenly break in half
Major deckbuilding sites like Moxfield and Archidekt will roll out tech to flag bracket cards, which is a really cool update
Herd Baloth, a relative newcomer from Modern Horizons 2 , is another great way to give you extra value for simply executing your game plan
But if you have 1/1 creatures available, you can pay 1 to equip Skullclamp and achieve the same result as if that creature were sacrificed