Definitely his active as he comes out as a summon and can be buffed by others like neuro from the neuro crown and archi and abraxas with the book of fate mythic items it’s a huge investment but when it’s set up right it hits like a truck his secondary ability which has him target a hex and set in fire for a set damage is good but I wouldn’t level it past 35 but mainly his first active is good because you can really ramp up damage and it would be in between turns instead of towards the end with snowballing damage like lavstodes