Recent Standard printings have given us cards like Fatal Push, Cast Down, and Assassins Trophy, but Heartless Act could prove to be one the of the best removal spells ever printed
There are a lot of -X/-X board wipes, but they dont tend to go that high, the best two being Languish and Black Suns Zenith
If you let them use Aether Vial to generate mana, they can start producing things that get in the way faster than you can answer them
At the beginning, it was highly focused on combat, but developed through play design to be more balanced
If the sacrificed permanent was a Treasure, Evereth gains lifelink until end of turn
It actually has a different mistake