This was my first rare IIRC.

My favorite combo with this about 5 years ago are all pretty much mentioned here: Guilty Conscience and the En-Kor.

As blockers you could leave back 1/1s who put all the damage on this guy; as an attacker he'd double in size every turn; while GC was occasionally of use against my opponent's fat as well. Boy that was a bad deck; but it was Timmy as all get out to attack and watch it grow to insane sizes.