Whenever this creature attacks, it deals damage equal to its power to up to one other target creature
The ability to cast it at any time while interacting with the board or temporarily countering a spell gives you a lot of available plays
[223] Using a specific set of cards in a specialized manner has shown Magic: The Gathering to be Turing complete
Still, I do not think this through enough at that point or decide I dont want to risk casting Show and Tell for a mere Emrakul, the Aeons Torn, so I shuffle the cards away with Ponder just to draw Polluted Delta, leaving me with 4 lands, Emrakul, the Aeons Torn and Daze in hand
But that ability to go under the radar - true to the deck's name - will only help your win rate
The premise of that effect is powerful in and of itself, but Woe Strider gives us a lot more on top of that