Dropping a Gruul Spellbreaker as a 4/4 will dodge Deafening Clarion on the following turn, while Skarrgan Hellkite can enter as a 5/5, to the frustration of every player holding a Lava Coil in reserve
When cast, this action allows you to look at the top four cards of your deck, you may reveal a character card and put it in your hand, and the rest go straight to the bottom of your deck in any order
Its best friends with Curse of Death's Hold and Kaervek, the Spiteful
With the handful of demons in this deck, he can potentially draw you a few cards when he enters the battlefield using his Prince of Chaos ability and he can leverage his status as the Lord of Torment in order to have your other demons dole out big damage when they enter the battlefield
Whether you think Black Lotus or Time Walk should really be considered the best card in MTG history, there is a strong argument there as well
For example, if you attack with a 5/5 creature with trample and it's blocked by a 2/2 creature, you can assign 2 damage to the blocker and 3 damage to the defending player