I have been working on some additional details.
changed druid and cleric (spontaneous spells added)
Cleric
The cleric gains (1d8 + wisdom modifier) mana points per level. His known spells are determined by his chosen domains. He also gains a number of bonus spells of his choice equal to his wisdom modifier (min 1). At each level after that, he may choose an additional spell of his choice.
The cleric's class features are altered as follows:
Turn undead: The cleric gains this ability at 1st level at a mana cost of twice his level. This ability may be reduced in effective level to reduce the mana cost accordingly.
Spontaneous Healing: Cure or inflict spells (depending on the cleric's choice) which he can cast spontaneously under the core rules cost 1 mana less to cast (min 1).
Druid
The druid gains (1d8 + wisdom modifier) mana points per level. At first level he may choose a number of spells known equal to (3 + his wisdom modifier). He gains two additional spells per additional level.
Spontaneous Summoning: Summoning spells which a druid can cast cost 1 less mana to cast (min 1).
added sorcerer ability:
Fetish: The sorcerer chooses a spell he knows and adds a focus to the spell's components. If the spell already had a focus component, add a second focus. The spell's effective level decreases by 1, reducing the mana cost by 2 in the process. The focus component cannot be avoided in any way.
added metamagic rules:
Metamagic
Metamagic feats can be applied spontaneously to spells as they are cast and increase the spell's mana cost accordingly (+2 mana per additional spell level). If the resulting spell level is above the maximum spell level available to the character at that time, he may cast the spell but suffers 1d4 points of nonlethal damage in the process.
Example: A 4th-level sorcerer with the extend spell feat and the protection from arrows spell would cast this spell as a second level spell with a mana cost of 4. He can apply his extend spell feat to protection of arrows spontaneously, raising the spell's mana cost to 6. Since the spell's new spell level of 3 is greater than the sorcerer's maximum spell level at that level,
added the following feat:
Craft Bound Spell [Item Creation]
Prerequisites: caster level 3rd
Benefit: You may craft items which holds a single spell. The item can be of any size, such as a gem, a ring or a mirror. When binding the spell into the item, you set the spell's parameters according to the desired caster level etc. Any character may from then on use the spell by spending mana according to the spell's cost and passing a Use Magic Device check (DC 15 + spell level). Knowing a command word grants a +4 bonus to that check. Binding the spell costs 50 gp x caster level x spell level and 1/25th of the gold costs in XP.
Example: A spellcaster could bind a true strike spell into a bow at a cost of 50 x caster level 1 x spell level 1 = 50 gp and 50/25 = 2 XP. Whenever a character spends a single action and passes a DC 16 Use Magic Device check, he can spend 2 mana to cast true strike on himself, even if he does not know the spell himself. If a command word was assigned to the bow and known by the user, the DC would drop to 12.
Looking forward to criticism,
tbd
