Tech 2 Amphibious Tanks (except the Aeon Blaze ) are tougher than T2 heavy tanks, with the exception of the Aeon Obsidian, which has an excellent shield. Aside from being amphibious, the last unifying feature of all 4 tanks is their high speed. With a universal speed of 3.7, they are among the fastest land units in the game, making them excellent at pursuing fleeing targets and kiting. These tanks are otherwise quite variable in both price and the role they play on the battlefield, but all of them are useful units in the correct situation.