I'm currently focusing on gather as much legend joker orbs as possible to put 5 stars on the only vampire I have atm (Prideful Vampire Dragon). I've been doing this since SP released the first empower promotion, were you can use as many jokers as you want to upgrade stuff.
He is at lvl 55 now, with 3 stars. I decided to seriously focus on this one in particular because it's the perfect kratus killer I've seen so far, and since arena is full of them, so ... why not?
1-) Both his special abilities does critical on kratus;
2-) His defensive element is Ice and considering that dragons when controlled by the computer, they can't use non-native upgraded skills, that means kratus can only use war attacks or basic attacks, therefore, kratus can only attack this vampire using basic attacks, otherwise it would deal only half-damage;
3-) His first special not only does critical on kratus but immensely heals him back
4-) His second skill does so much damage that I'm already able to 1-hit kill kratus lvl 70 even tho my vampire is only lvl 55.
This is its damage in the Ice Arena, using the water special skill, with no buff tower:
And this is with the buff from the tower:
I was wondering how much damage he could do being lvl 70 A+ using buff from tower in a Master Water Arena III against war-defensive dragons ... 500k maybe? a little less? If someone has it on lvl 70 and could share when we get a water arena, I'm really curious