Hooks:
- Battle start (tactician, foot soldier)
- Battle end (nobody?)
- Turn start (nobody?)
- Turn end (Rance)
- Attack (everyone)
- Attacked (everyone)
- Ally attacked (foot soldier)
- Foe attacked (nobody?)
- Ally defeated (nobody?)
- Foe defeated (defeated warrior hunt)
- Action (everyone)

Things that can hook:
- Unit's class
- Unit's skills
- Unit's item
- Unit's status

Summon ogre costs 2 flags