Saphira Brightscales

Partner with Eragon Shadeslayer
Flying, shroud
Saphira costs {2} less to cast if you control Eragon.
Whenever Saphira Brightscales enters
the battlefield or attacks, you may pay {x}. If you
do, Saphira deals X damage to any target. If you control Eragon, Saphira deals twice X damage
instead.
While you control Eragon Shadeslayer,
Saphira loses shroud and gains hexproof.