This card was added in the Hearthstone expansion Voyage to the Sunken City.
Voyage to the Sunken City
"Why didn't you just build a normal submarine. Only you can fit inside"
"WhY DiDn'T YoU JuSt BuIlD anormalsub-WHY DO YOU THINK WREZIG!! If you can build a freaking Mecha-Shark, then you build a freaking Mecha-Shark!"