Flavor text.
A thought I had while writing my last post, and trying to describe the hour of whatever druids do to gain spells.
The circle, to whatever Druidic tradition Mahe belongs to, sees the circle as theologically significant, symbolic of all of the world. It represents the totality of nature and the cycle of life. When a Druid prays for spells, he draws a circle in whatever surface is convient (and preferably in natural materials), such as in dirt, carved in a dead piece of wood, written with plant dyes or charcoal, what have you. The Druid then sits in contemplation of the circle and begins to draw Drudic symbols in and around it, with each symbol representing a spell he wishes to prepare. For example, a druid preparing
Produce Flame might write the druidic letter for fire stylized in one manner on the edge (indicating that it is to be projecting outwards) and the druidic letter for fire stylized in another manner
within the circle to represent preparing
Flame Shield. Preparing the various levels of
Cure spells would involve drawing the symbol for life in various manners; a reincarnation spell by writing symbols of death and birth on opposite sides of the circle. A high-level druid's circle will, at the end of the session, be positively covered with symbols.
Theoretically, another druid observing this process would be able to tell what is being prepared with a spellcraft check (others would suffer a large penalty, if they can do it at all, because they can't speak druidic). This would still not be easy, however, because each Druid's relation with nature is different and thus so would be the symbology. If not erased, a druid could also look at the circle after the fact and discern what had been done (and even an erased circle might be able to be partially read by a suitably high Track check.)
Just some flavor text.
Edit:
New spells:
0-Detect Magic, Light, Cure Minor Wounds x2
1-Cure light wounds x2, Shillelagh, Entangle
2-Cure Moderate Wounds x2, Bull's Strength
3-Spikes