Embedding wizard spells allows non-wizards and young wizards to cast spells upon themselves without using mana. The owner of the embedded item must have acquired the magic item use skill. The number and types of spells allowed in a magical item are limited by the amount of mana which the item can safely hold.
Embeddable items should be purchased at a magic shop or from an alchemist. Gems are made embeddable by being purified by a bard. Some items must be tempered with a grot'tel potion before they will be receptive to embedded magic. Other items, such as certain rods, wands, and amulets, are already tempered for embedding. Wands created by rangers are ready for embedding.
Spells embedded into rods and wands can be cast upon yourself, or upon others -- depending upon whom the wand is waved at. Amulets, gems, and jewelry are only for self-cast spells. For this reason, you do not embed attack spells into rings or amulets.
The Elemental Detection 405 spell is a good spell for determining whether or not an item has a spell imbedded in it, or whether it is susceptible to embedding. You can detect imbedded spells and a good idea as to how many charges are left in an item. If the flows of mana are strangely attracted to an item, it is embeddable without first being tempered.
The Magic Item Creation spell is the most verbose spell in our repertoire. If tempering is required, we hold the grot potion in our right hand, and the item in our left hand. We then pour the potion on our item, and we can immediately tell if the tempering was successful.
With an embeddable item in hand, we then cast the spell 420 upon the item, then we issue the "embed" command. Commanding the spell, we must focus our thoughts on a careful series of words:
"Embed [spell number] in [item] using [rub, wave] for [#] charges."
This syntax is important. Casting the spell upon the item, we have established which item we are imbedding into, but we still must command the spell to embed, and we must mention the item. Mention the item as an unqualified noun -- rod, wand, ring, etc. -- in the embed command. Do not use the word "my" or any other qualifier such as "lead wand" or the command will not work properly.
We must have enough mana in our minds to cover all of the charges that we ask for. If the item will not handle the mana required to put all of the charges into it, it will load as many charges into the item as it can. When the spell is successful, you can tell how many charges you were able to place into the item.
Take as examples a lead wand that I want to embed strength into, and a tannic amulet that I want to embed haste I into.
Cast at my lead wand.
Imbed 509 in wand using wave for 5 charges
If successful, I will know that (for example) 3 charges have been put into the wand. The user of the wand can wave it at himself, or at someone else. The level of the person who ultimately waves the wand will be what determines the duration of the spell.
Cast at my tanic amulet
Imbed 506 in amulet using rub for 9 charges
If successful, I will know that six charges have been put into the amulet. Anyone who rubs the amulet will cast Haste I upon themselves.
High level spells such as wizard shield do not embed well because they require a tremendous amount of mana for every cast. Very few items will hold more than one charge of wizard shield. Silveries and Blurs embed well. Strength and Haste I are fairly good at embedding and are very useful for sword swingers. Invisibility is a spell which can only be self-cast by a wizard, but by embedding the spell, others can cast it upon themselves through their jewlry.