Hero Boost

Players can upgrade the hero's power by upgrading stars.

The relationship between quality and star rating

Quality	Colour	Initial star rating	Upper limit
N	Green	1	5
R	Blue	2	6
SR	Purple	3	7
SSR	Orange	4	8

The relationship between star rating and grades

star rating	Attribute increase	Hero NFT	$MM	$MC	Cooling time (h)	Accelerated consumption ($MM)	Upper limit
1	0	0	0	0	0	0	5
2	30%	0	150	1	48	150	10
3	30%	0	300	1	48	150	15
4	30%	⭐️⭐️⭐️	450	2	96	300	20
5	30%	⭐️⭐️⭐️⭐️	750	2	96	300	25
6	30%	⭐️⭐️⭐️⭐️⭐️	1200	4	144	450	30
7	30%	⭐️⭐️⭐️⭐️⭐️⭐️	1950	4	144	450	35
8	30%	⭐️⭐️⭐️⭐️⭐️⭐️⭐️	3150	8	192	0	40