Ninjitsu
Ninjitsu is the main skill of the Ninja, and combines the arts of stealth, espionage and assassination. With it, and the Book of Ninjitsu (looted from Elite Ninja), a Ninja can evoke a number of special abilities including transforming into a variety of creatures that give unique bonuses, using stealth to attack unsuspecting opponents or just plain disappear into thin air! This skill also counts towards your ability to perform Special Moves.
Training:
0-30: - Buy from NPC Ninja at Tokuno Zento.
30-40: - Surprise Attack
40-60: - Summon Mirror Images. Attack your mirror images so they will disappear.
60-70: - Use Focus Attack
70-85: - Use Shadow Jump
85-120: - Use Death Strike
Gains may be slow or cease entirely from 57.5 - 60 using Summon Mirror Image. You may wish to start using Focus Attack on your mirror summons. There are 2 different ways to train with Focus Attack and Death Strike. Either attack a pet that is guarding you on the Trammel facet (you must not be in a guild) or summon a Mirror Image to attack on the Felucca facet. Alternatively, Shadow Jump seems to work effectively from 55-70; however, it will not work inside of a player house.