Well, they seem like a fun unit to do, but my tries with it in 3v3s haven't been... convincing. Well, so I go Pally, seeing as his aura can give the tanks more life and tech once I get 7 foots. Then at tier 2, I tech again and drop 2 workshops. But by this time, the enemy is knocking at my teammates door. Unable to help him, I continue massing until I get a dozen. Then I proceed to hit the enemies base and continue to the next and next. However, right when we cleared the main bases of them, it wasn't game over. The enemies in that time have cleared me and my other teammates bases. So we scramble to find their bases, but sadly, they are elf. That means lots of hiding. So in total, at least in 3v3 and big map games, tanks don't seem that great. While you can kill their structures, they can kill yours. But if your armies ever meet, you tanks can't do anything. Tanks are slow, they take longer than knights, a four food unit to build! At tier 2, the workshop doesn't give you much to build. Gyro? Dies fast, but maybe good for scouting. Mortar? But you need to save money for tanks. Tanks move so slow and by the time you kill their base, they are slowly working yours. Yea, so I've heard they are okay in smaller 1v1 2v2 games, but I find other units to work better than these.