Spontaneous Casting
Source: Advanced Player's Guide, p. 101
Replaces: This ability replaces the ability to spontaneously cast summon nature’s ally spells.
An urban druid can channel stored spell energy into domain spells that she has not prepared ahead of time. She can “lose” a prepared spell in order to cast any domain spell of the same level or lower. This ability replaces the ability to spontaneously cast summon nature’s ally spells.