We don't use these skills now, but we have tried. Than we used Oblivion potion to remove them and restore skill points in 4Story.
Transmit MP - You can transfer your mana to any of your party members.
Transmit HP - You can transfer your health to any of your party members.
Sacred Sacrifice - This will fully heal all party members but you will die if you don't drink Panacea of Purification potion in 10 minutes.
Sublime Pain - This skill makes your party invincible. It consumes your own mana (6% per sec. at first level). The skill will be stopped if you die. This is great skill.
You can heal yourself on 4 ways:
1. Cast "Heal" and heal yourself.
2. Cast "Healing Toush" and heal yourself and friends around you.
3. Cast "Bloodsucking" and steal the opponent's HP.
4. Use "HP Potion".
If you combine all 4 you will be almost undefeatable.