Cool monster would not use him in a team
The increase in difficulty was cool plus the trial mode where you could test him out I have to point out that if your monster is 2 sec or less they will outspeed him when he comes in
Managed to beat extreme with 8 monsters left using my poison team so that was fun
It did happen to me, Icefang came out but I still got the next turn. If we are going to use the passive skill definition of Icefang as a basis then this should be a glitch?
Beat it with the team attached. I noticed something. I stealthed my soul with my auto protector, so he wouldnt die from the DS All but all the enemies would die from mine, i had archalo and blitz in 5 and 6. Their frontline completly died, on my side only soul survived. Now icefang came in on their side but his passive went before the stunning entrance, so once the stunning entrance hit, his turn was denied and he got stunned without being able to make a move at first. I stopped the battle at this point and tried it over and over again and it went this way in 14 out of 16 times. Then i got bored and finished the battle 
Оmg, finally did it with crazy luck after constant trying several days. Really the hardest challenge for me till now.
I failed the 2nd one but completed the hardest first time.
Icefang is not OP but very strong monster , thats why that monster have only bloodcrave and not bloodfurry/bloodthirst will be OP