While you won't get the annihilator trigger off of Emrakul, the Aeons Torn, you'll still be attacking with 15 power in the air, and the Emrakul will go back to your hand afterward, to attack again if your opponent happens to survive
At the same time, you need lore to advance towards victory, so questing with a powerful card is often worth it for the points gain even if it opens it up to attack
It's just how the timing landed this time, but in general Commander gets to operate on its own schedule
At any time you're at least 100 percent cool, you can tap Rainbow Dash to gain one mana of every color, and then you reset your coolness to zero
Well, thats simple: Invisible Stalker
A few notable cards in this deck include Fred - Mascot by Day which is a nifty card that gives the player 2 Lore points whenever it is challenged by the opponent