Minamoto no Yoshitsune is a premium Legendary Commander whose skills are incredibly difficult to upgrade without spending real money on the character, which is why he is sometimes referred to a Moneymoto.
Great against barbarians on the map, he is a cavalry specialist commander that is worth spending tomes on, even if you don't play to spend money to upgrade his skills.
Minamoto no Yoshitune
Minamoto no Yoshitune Skills
Here is a rundown of Minamoto's skills
Kyoachiryu Active Skill Rage Requirement: 1000 Deals direct damage (depending on skill level) to the target, and has a 50% chance to deal additional damage (depending on skill level) to the target each second for the next 2 seconds.
Master of Kendo Passive Skill Increases damage dealt to barbarians by troops led by this commander, depending on skill level.
Levels Bonus damage to Barbarians: 10%, 20%, 30%, 40%, 50%
Warlord Passive Skill Troop's normal attacks have a 10% chance to increase damage taken by the target 10% for the next 3 seconds. Effects can only trigger once every 5 seconds.
Levels Damage taken increased by 10%, 15%, 20%, 25%, 30%
Kyohachiryu Kiwami
Without Expertise: Deals direct damage (Damage Factor 1400) to the target, and has a 50% chance to deal additional damage (Damage Factor 600) to the target each second for the next 2 seconds
With Expertise: Deals direct damage (Damage Factor 1400) to the target, and has a 75% chance to deal additional damage (Damage Factor 600) to the target each second for the next 2 seconds
We have questions and answers related to this topic which may also help you: Show all