Unit/Banner

Commander Weapons, also referred in the user interface as "Banner", are an additional upgrade for units that can be unlocked after Player Level 68. 
Banners can be upgraded along two paths.
Ranks; a banner will increase the unit's base ATK, base HP, Unit Damage Reduction and Unit Damage while also providing ATK, HP, Unit Damage Reduction and Unit Damage to same faction units.
Stars; a weapon will unlock extra abilities and/or stats.
==Ranks==
A banner ranks can be activated via using Commander Medal. This is a special currency that can be obtained through the Glory Arena and Glory Store.
The table below shows the number of nodes and Commander Medals required for each rank. In order to advance next rank, all nodes from previous rank must be activated.
Rank Level	Gold 	Nodes	Cost	Cumulative Cost
Rank 1 	0 	6 	132 	132
Rank 2 	100.000 	15 	270 	402
Rank 3 	250.000 	15 	270 	672
Rank 4 	500.000 	24 	440 	1112
Rank 5 	750.000 	24 	440 	1552
Rank 6 	1.000.000	40 	740 	2292
Rank 7 	2.000.000	40 	740 	3032
==Stars==
Similar to Weapon rank system, first the weapon must be awakened - point in which an exclusive ability becomes available to the unit (and it has technically 0 stars). After this, the weapon can be further upgraded 6 times up to 6* for another ability unlocked for the unit at each star up.
To upgrade stars, Banner Souls are required. Banner Souls can be obtained with exchanging Eternal Gold during special events, conversion rate is 1:1.
Here are the number of Banner Souls required to unlock Banner Stars:
Rank 	Banner Souls Required	Cumulative
Awaken	50 	50
1★ 	70 	120
2★ 	90 	210
3★ 	120 	330
4★ 	160 	490
5★ 	200 	690
6★ 	310 	1000