Manasteal doesn't exist on jewels. Check the MagicPrefix and MagicSuffix text files on your computer. They're in the Data/Global/Excel folder. Open them in a spreadsheet program to make browsing easier.
Code:
Name levelreq mod1code mod1min mod1max itype1 itype2 etype1
of the Leech 4 lifesteal 4 5 weap orb
of the Leech 10 lifesteal 3 4 ring circ
of the Leech 20 lifesteal 2 3 amul
of the Leech 26 lifesteal 2 3 glov jewl
of the Locust 35 lifesteal 5 7 ring circ
of the Locust 15 lifesteal 6 8 weap orb
of the Locust 45 lifesteal 4 6 amul
of the Lamprey 43 lifesteal 9 12 weap orb
of the Lamprey 65 lifesteal 8 10 ring circ
of the Lamprey 73 lifesteal 7 8 amul
of the Bat 4 manasteal 4 5 weap orb
of the Bat 11 manasteal 3 4 amul circ
of the Bat 21 manasteal 2 3 ring
of the Bat 27 manasteal 3 3 glov
of the Wraith 16 manasteal 6 8 weap
of the Wraith 40 manasteal 5 7 amul circ
of the Wraith 46 manasteal 4 6 ring
of the Vampire 48 manasteal 9 12 weap
of the Vampire 66 manasteal 8 10 amul circ
of the Vampire 74 manasteal 7 8 ring
There are not leaching prefixes. By that I mean you will never come across an item with "Batty ring of the bat".
