the higher avrage combos you get adds a substantial amount of extra points
notes on rarity score.
1. continuing does not affect score. *eg..* if u had total team cost of 17, so long as you complete the dungeon you will get 200k points garenteed.
2. u must use 2 leader & 4 subs, using 2 leaders & 3 subs will not boost your avr rarity score.
3. yes, you friends pet does count in your total avr rarity.
for example the team i used for ancient light dragon dungeon was =
Robin(4*) & Kushinada(6*) << leaders,
werewolf(1*), kelpie(1*), vamp(6*), baddie(1*), << subs
= total rarity of 19 or 165k points.
(so I only needed 35k points from turns and combos), which was not a problem since i finished in 15 turns and avraged +9 combos per round. ended w/ nearly 400k points =D Good Luck hope this helps
chart information obtained from puzzleanddragonsforums.com
Great breakdown! Thanks!