Grinding tips for banquet event

Fitkid46mcoc

So any tips for unit grinding for banquet event also should i upgrade 5 star herk or 5 star doom

Malreck04

herk

Ben5757

arenas

phillgreen

Go back in time 6 months and do arena.

Hulkbusterno

If you absolutely grind your thumbs off, you could make about 3.9k units from arena in the next 3 weeks. a good comment by @Danxor explains this in https://forums.playcontestofchampions.com/en/discussion/comment/2427470#Comment_2427470

Fitkid46mcoc

Thanku guys