He can actually be very helpful if you have a lot of good damage reducers or your opponent dosn't have too many high power cards. This is because unless your opponent can inflict more then 6 damage you can't be koed.
That is true I guess. I just wonder if it is viable to use him (obviously it is, otherwise it wouldn't have gone up to 30 wins), but he just seems like a huge liability in late stages. You have to get him through AND you have to get your opponent under 7 life. And all that with a lower pill count.
I don't question his usage, I'm just curious how he is used to the full effect in later stages.
As a pirhana player myself, I can say it's really easy to force others to play bad cards so just bluffing him in there could easily win.