I am assuming a pure Mage/Sorcerer, and not variations like Cleric/Mages. This should be considered Basic Spellcasting though.
The number of combinations are nearly countless, so I will just list down the ones I use the most.
Minor Spell Sequencer:
--------
- Offensive:
- 2 Magic Missiles
- 2 Melf's Acid Arrows
- Defensive:
- Mirror Image + Resist Fear
Spell Sequencer:--------
- Offensive:
- 3 Flames Arrows( 60d6 damage MuWahHAHAHAHA!
)
- 3 Lightning Bolts( be extremely careful with this)
- Greater Malison + Emotion + Slow
Spell Trigger:--------
- Offensive:
- 3 Chain Lightnings
- 3 Lower Resistances
- Defensive:
- Spell Immunity + Protection from Magical Weapons + True Sight
Contingency:--------
Mislead on Self when Self is Disabled.
Protection from Magical Weapons on Self when Enemy is Sighted.
Chain Contingency:
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3 Abi-Dalzim's Horrid Wiltings cast on nearest enemy when enemy is sighted.
3 Pierce Shields cast on nearest enemy when enemy is sighted.