I’ve been wanting these:
Conduction: gains the same number of TU instead of losing them.
Assassinate: Marks ONE ark for 350 TU. Marked ark is destroyed if it uses an active ability. (Only one ark can be marked at any time)
Giant Killer: 500-600 dmg if target is 10-12 stars. Does 500% dmg bonus. Single attack.
Wrong forum…?
Now that meta game are full of strong water arks. We are likely to see fewer fire arks. IMO only two fire arks that worth running are only golden horn and magma.
Keeping this in mind, earth arks will be able to survive much longer. Giga, vegi and moss will be very valuable 
My line up is currently fire ark free. 
Wind arks are also more accentuated as well (Triphoon, Vortexor, Gremknight, mixed with Riaoh and Chopperbug).
Triphoon and Vegicat are extremely valuable arks because of the current meta. Gotta keep them protected…
I just went up against someone that stunned my arks, pulled out a ruidguard. He summoned at least 6 drones and ended it with stego. Let’s just say I got crushed