Brainstorm is a bit rare in this format, but if you happen to have one, this will shuffle away your unwanted cards just like a fetchland but its a bit easier to match the timing than with a fetchland, since you can use it for mana until you cast Brainstorm, where as a fetch will likely feel uncomfortable wilting on the field
Koh, the Face-Stealer Holy Ravenous Chupacabra, I clearly don't know much about Avatar when did No-Face show up in the series
Its also much more social and friendly, since up to 5 players can participate
(Either way, that may be resolved before long thanks to The Pokemon Company acquiring a US TCG distributor.) However, the biggest spectre looming over us all by far would be resellers
As you can see, he deals 7 damage on your turn only so not on defense, as well as friends and enemies alike