Greetings everyone I would like to share my views on this old looking viking guy becase he is part of challenge .
Well his big beard looks face seems to be carrying some rage but this dude seems not much of use even with a little bit of extra reach on its hand. At least that seems to be looking like the case for me in my Bronze league and even though I use mostly free starter cards. I did not find any use case for this little dude in most scenario. Maybe once level come into play he might be get some improvements but this I far of a case at the moment. If not for the challenge possibility of me using this card are bleak.
If I went head with the normal fire or death splinter line-up for battles with less than 20 mana line-up chances of victory are way more. Or with water splinter in 23-30 mana cap battles possibility of victory could drastically increase.
My Ideal battle strategy if you must use
You can check out my battle here
Ideal user case for this dude is at least a mana cap of above 23, using him at a mana cap below that seems suicidal to me. Cause best position is for this guy second spot as he could safely take the hits from behind the tank. As placed here
In the end i came out as victorious but a clear a mess could be seen in enemy lineup just by taking a glance just look at the placement of his horny toad he is way behind in the line up
an Elven cutthroat would be a way better
choice at that place
Conclusion
Since, I am a low level player I can only speak for my league and my opinion is don't use it there will almost always be a card with better trick under its sleeve for a better assurance towards your victory. Cause Grumpy Dwarf acts as a second tank in case your primary tank dies you can expect him to take two hits for you but more people using cards sneak, snipe and assassin in there line ups make it more or like a waste to use him
Few other cards that you can consider using
!
All of the cards above are low in mana cap or are atleast equal to Grumpy Dwarf in mana cap. If you still insist on using him, well then the blood is on or hands not on mine.