Caidian Stormfury

Heirloom (when this creature enters the battlefield,
you may search your library for an Heirloom card,
reveal it, put it into your hand, then shuffle.)
Flying
Whenever Caidian Stormfury deals combat
damage to a player, you may pay {1}{g}{u}. If you
do, put a +1/+1 counter on a creature you
control, then proliferate.
Partner (You can have two commanders if both have partner.)