[graaliholic]

Low Level (100 grace - 50 grace without praying on an altar)
Divine Shock
Insect Plague
Poison Fog
Spiderweb
Wall of Thorns (Brigid)

Medium Level (300 grace - 150 grace without praying on an altar)
Cause Critical Wounds
Cause Many Wounds
Cause Red Death
Cause Smallpox
Conflict
Daylight
Defense
Finger of Death
Flaiming Aura
Ironwood Skin
Nightfall
Peace
Raise Dead
Resurrection
Sanctuary
Sunspear
Vitriol
Wall of Thorns (Govannon)
Windstorm
Wrathful Eye

High Level (600 grace - 300 grace without praying on an altar)
Cause Black Death
Face of Death
Reincarnation

You also need to be the same or higher level than the spell, so since sunspear is level 6 you would need to be atleast level 6 with 150 base grace, etc.