Under rated cards??

[Juggalonoke]

{Revenge of the Hunted} does come to mind. I thought {Grand Artitect} was underrated yoo

For standerd at the time he was horrible but now i run him in a  {Sharuum the Hegemon}
Edh deck and he's an amazing mana ramp source for my expensive artifacts.

[Dudecore]

I was running him in standard. Turn 3 {Wurmcoil Engine}. Innistrad with Delver and Snapcaster made him less useful.