You could, in theory, end up using him as a game-ending play if it takes enough damage from other players, or you could use him in a deck thatll have your own creatures damage him to make him a juggernaut
On turn 3, cast Titanic Growth to make her a 5/5
Put four copies in your deck and mulligan until you find one of them
Creating infinite tokens with Sliver Queen or cards that produce tokens exclusively with colorless mana like Myr Matrix is the most common line of play, but the sheer amount of mana you get from tapping a commander like Krenko, Mob Boss can also let you spin up a lethal burn spell like Comet Storm with ease
When evaluating the power level of a card, its always important to keep mana cost in mind
Its a perfect mana fixer that rewards you for casting creatures, but it doesnt require you to for some unholy reason