Emrakul, the Aeons Torn is a 15-mana flying 15/15 that cant be countered, gives you an extra turn after you cast it, has protection from cards that have colours and has Annihilator 6
And since it is both an ETB and Monstrous effect, Alpha Deathclaw can be looped to provide a consistent, devastating removal effect
The most common strategy for fighting discard later in the game is to either play everything all the time, which some decks have the ability to do, or to hold land in your hand to shield you
He was one of the original five Elder Dragon legends, one of the characters that laid the earliest bricks in the foundations of Commander
Be very patient with our mill spells as the more lands we have out by the time we have to start milling them, the easier this is