Proteus or Rigard

[Gryphonknight]

Without knowing the rest of your roster, I would recommend leveling both Proteus AND Rigard to 4* 3.60 since this takes the same Hero XP, only 1*/2* farmable ascension items and 4* 3.60
Are the most powerful heroes in the game using 1* / 2* ascension items.

If not already, I strongly advise getting a rainbow 3* 3.50 and a rainbow 4* 3.60 before worrying about 4* 4.70 and 5* 3.70 heroes.

Color stacking a very powerful tool.

==Notes ==

@Gryphonknight

==Double strong color, no weak color, teams==

Now that you have two rainbow teams ( one 3* 3.50 and one 4* 3.60 ) you can create double strong color, no weak color teams.

@Gryphonknight

I ran Halloween event on autoplay for normal levels 1- 20, and have so far used autoplay up it to advanced level 5 ( waiting on World Energy) with Melendor, Grimm, Wu Kong, Scarlett, Rigard ( all 4* 4.70 ).

Leveling two 4* heroes to 3.60 takes the same XP as leveling one to 4.70, but 4* 3.60 are the most powerful heroes in the game using only farmable ascension items.

@Gryphonknight

4* 3.60 heroes take 0% of the 3* ascension items and 24% of the XP of a 5* 4.80 hero.
4* 3.60 heroes are the strongest heroes in the game that use only farmable ascension materials, so you never regret using a 3*/4* ascension item on them.

Legendary training averages a 5* hero every 40 days. Or 9.125 per year.
Legendary training averages a 4* hero every 10 days. Or 36.5 per year.

If you give in to calendar offers:

full ascension items for 4* heroes cost $12 USD [ $2 x ( 1+ 1+ 4 ) ]
full ascension items for 5* heroes cost $100 USD [ $2 x ( 1+ 1+ 4 ), $2 x 4, $10 x ( 1+ 1+ 6 ) ]