Glori to midas
I’d say Midas. His Explosive Trio gets upgraded to Explosive Quartet after ultra-evolving. Wrathengine gains a DEF boost that helps him survive more. Shieldwyrm is also a good choice, but I don’t know exactly what he gets.
why no pengbord
his desperate bite is op
can do one hit kill
This is why I’m stuck haha, they all have good evolutions, but i don’t have enough for all 
Midas… Death revenge keep opponents to killing him without a second thought
Go for aegis , midas then shadowstalker.