Gromp buff does not include +25% Bonus Health from Cinderhulk
I had 3586 bonus hp (5683 - 2097 base) so gromp buff should do 10 + 0.1*3586 = 369 damage.
3586/1.25 = 2869 (bonus HP witout the 717 HP from the +25% bonus hp from cinder hulk)
10+0.1*2869=297, the amount of damage seen in my screenshot.
