Mudra why so many ninja don't use them?

[Rongway]

The mudras require more memorization than most jobs to remember which combination does what

This is mostly because the order the game puts them on your bars is wrong. The game encourages you to put them on your bar in the order heaven-earth-man. If you put them in the order earth-man-heaven (Chi Jin Ten) most of them make a lot more sense.

• Huton: earth man heaven - energy flowing from the lowest point, through the caster, into the air
• Doton: heaven man earth - energy is flowing down through the caster into the earth
• Raiton: heaven earth or man earth - lightning strikes downward
• Katon: earth heaven or man heaven - flames rise.
• Suiton: (earth heaven) or (heaven earth) then man: gathering energy from all around and taking it in. This jutsu buffs you so you can use Trick Attack.

That just leaves Hyoton, which I have no good reminder for.

[sindriiisgaming]

This is mostly because the order the game puts them on your bars is wrong. The game encourages you to put them on your bar in the order heaven-earth-man. If you put them in the order earth-man-heaven (Chi Jin Ten) most of them make a lot more sense.

• Huton: earth man heaven - energy flowing from the lowest point, through the caster, into the air
• Doton: heaven man earth - energy is flowing down through the caster into the earth
• Raiton: heaven earth or man earth - lightning strikes downward
• Katon: earth heaven or man heaven - flames rise.
• Suiton: (earth heaven) or (heaven earth) then man: gathering energy from all around and taking it in. This jutsu buffs you so you can use Trick Attack.

That just leaves Hyoton, which I have no good reminder for.

This really doesn't simply them lol

[BelegErkhten]

That just leaves Hyoton, which I have no good reminder for.

"Only ever use this under Kassatsu"