I’m an Endgame Player (Level 1200+) and, for me, Level 12 Explores are pretty mindless because I use:
Mountain Crusher (usually with a class that gives Barrier on Brown and 50% mana)
High King Irongut
Eagle Banner (Brown++ Yelllow+ Purple-)
Match Brown to charge MC, fire it a couple of times to get ES powered up. Use ES to boost HKI’s attack to around the 100 mark, then Devour the enemy.
If, somehow, they manage to kill the Hero and ES, then HKI is sitting there ready to finish them off.
Vash is just there to Curse any enemy that usually can’t be Devoured.
I do four basic battles, Mini Boss, Mythic Boss and repeat.
About every 5th or 6th round I don’t get the Mythic because the Mini Boss doesn’t give 100 Mythstones each time.