Help with these Fantasy spells

[Obirandiath]

I would not allow these spells as written in my campaign. However, "Rule 0" applies and if the GM allows it, it's OK. That said, how about:

Steal Sustenance(Necromantic) Regular
This spell draws sustenance from the target to the caster, providing nutrition as if the caster had eaten a meal and drank water. The target can be any creature that is remotely similar to the caster, i.e., a cow, an elf, a Martian, but not an elemental, undead or demon (unless the caster is one of those things). A successful casting means that the caster does not need to eat one meal to avoid starvation and drink for 8 hours to aviod dehydration. If the caster has already missed meals and has lost FP due to starvation or FP and HP due to dehydration, one FP and one HP is regained of starvation/dehydration loss. This spell may be recast to regain multiple FP or HP lost to starvation or dehydration, but cannot otherwise benefit a caster more frequently than a meal or water is needed. Thus, a mage cannot cast this spell twelve times in order to not eat or drink for four days. The target loses one FP and one HP that can only be regained with rest, food and water, just as if the target had missed a meal and not had enough water for 8 hours (see B426).
Duration: Instant
Cost: 6, cannot be maintained
Time to Cast: 1 minute
Prerequisite: Magery 2, Steal Vitality
Item: Staff, wand or gloves, usable only by mages. Energy cost to create:1500.

Vampiric Strike (Necromantic, Body Control)Melee
The caster must strike the target to activate this spell. Hit location is not relevant and armor does not protect. The subject takes 1d of injury for every 3 energy put into this spell. The caster is healed 1 HP per 3 full HP of damage sustained by the target. This spell does not affect undead.
Cost: 3 to 9
Prerequisite: Steal Vitality, Deathtouch

Hurl Weapon (Movement) Regular
As per the Winged Knife spell, but the weapon also returns to the thrower. The weapon has Move 12 and will avoid obstacles and creatures, otherwise taking the straightest path to return. Attempts to catch the weapon while returning require a successful DX-4 check when it passes within reach. The weapon will continue to attempt to return to the original thrower for 3d seconds after being caught, during which time attempts to fight with it are at -4 to skill.
Cost: 1 per pound of the weapon's weight. Double cost for a weapon that is not normally thrown.
Prerequisite: Winged Weapon.
Item: None, but see Loyal Sword (M63).