Kaladin, Broken Hero

Double Strike, Vigilance
Kaladin, Broken Hero gets -X,+0 where
X is the number of creatures you control
Creatures you control get +0,+X where X
Is the number of creatures you control
Creatures you control gain Regenerate {w/u}
If you control this card and Syl, Storm's
Daughter you may pay {w}{w}{u}{u}{g}{g}
And sacrifice both, when you do meld
Into Kaladin, First Windrunner