Each of these characters lets you customize your playstyle and offers different ways to achieve your goal: accumulating +1/+1 counters on your creatures to strengthen your team
Lower numbers are generally more exciting, but if you open the biggest number in a run (like a 500/500), thats usually worth more than a middling number, too
You could also use it for #10 above, by the by, and if you did go wide, could I suggest Battle Cry as a good follow up
Its also nice that it is a , as I feel like often times wed get a 2/2 with this text box
Every time a mutant, ninja, or turtle of yours deals damage to a player, youd draw a card and put a +1/+1 counter on each of those creatures