That makes it a handy engine in decks built around artifacts like Astral Cornucopia or creatures that love growing bigger each turn
And with the proliferation of Mana Vault, Grim Monolith and more, this is a great way to tell folks that you want to play that game too
The exact events will vary from store to store, but all of them promise exciting Limited gameplay for a limited time
It also does so while being a nice safe high value play even when from behind
You might take away their fourth land or their preferred three drop but that won't actually do anything for two or three turns which greatly reduces the value of Blackmail being one mana
Black has a very cynical worldview, and its core philosophy is that of self-determination and release from society's imposed limitations, so when things truly go awry, a Black hero capable of waking people up to reality is exactly what the world needs