cleric3 isn’t overkill, it’s just simple good (u won’t get utility from priest1/diev1 or filler like bokor1)
as cleric3 u’ll have lv10 divine might which doesn’t wear off before u finish full skill rotate
divine might lv5 wear off after 5 skill used, safety zone+ black steam +incineration+2x heal = lose your divine might
if u have lv10, u will have more charge for your skill
cleric3 also have strongest heal bomb, u can keep using heal on boss as you want
9 tiles will hit boss if boss not moving, some leftover tiles will heal your friend
u can easier hit all boss (c2 can miss many tiles if boss is moving)
if u have falcon c3 in your party, all your heal tiles will hit boss like truck
cleric3 also have less skill attribute that u need to invest, u can have more lv on heal or other skill than spare some money on effigy
many boss also die before u finish full rotate, heal is your fastest/strongest burst
tldr. get cleric c3 if u want simple gameplay or want to do boss race with other