Rebirth

({p/c} can be paid with {2} or 2 life)
When rebirth enters the battlefield if you paid 10 life to cast this card exile target Eragon Rider you control then put it onto the battlefield under your control. Eragon Rider you control are elf in addition to there other types and have partner with Saphira and is now your additional commander.
Indestructible, shroud, cannot be sacrificed.