Method to Acquire - Go to the right house in the northeast of Chapter 9 and he'll join you on Chapter 11 in the beginning. If you go to left house or neither, he will join you at the end of Chapter 11 and he'll do Auguries for you but you won't be able to deploy him.
Damage - N/A
Critical - While he has no critical of his own, his supports with Percival increase Percival's critical.
Speed - Elphin will almost always max out speed causing only very fast promoted units to hit him twice.
Dodge - Elphin is almost untouchable by enemy units at level 20. His dodge should be around 65.
Growth Rates
HP - 80%
Strength - 5%
Skill - 5%
Speed - 65%
Defense - 25%
Resistence - 55%
Luck - 65%
Average Level 20 Bard Elphin
HP - 30
Strength - 2
Skill - 4
Speed - 20
Defense - 9
Resistence - 12
Luck - 23
Total - 100
Supports
Klein - 25/30/40 turns
Percival - 20/30/40 turns
Cecilia - 20/30/40 turns
Fa - 59/60/80 turns
Douglas - 15/30/40 turns
Rating - 7.0/10. He's more useful then Nils as you have him in the game more and more useful then Ninian as playing his harp takes much less time then Ninian's dance and his supports with Percival make Percival even stronger.