Popular vampire Commanders of the past like Soren Markov and Strefan, Maurer progenitor boosted other vampires or provided ways of getting your vampire creatures onto the field faster
If you like to deal with problematic cards as they come, this might be the artifact for you
Mono-blue cards are good too, with Divide by Zero being a fine place to start
The effect is always active, even during opponents turns, so creatures equipped with flash can help buff your defense in the middle of combat
Among the two, the Alolan Poncho Pikachu is more valuable and arguably more visually striking
It's basically a way of not playing and not interacting with the game and it costs so much that it isn't a temporary way to protect yourself while you win, it's going to require a whole game plan to roll out