Xerbias, Gultan's Champion

Colorless creatures you control get +1/+1.
{2}, {t}: Until end of turn, another target creature
you control gets +X/+X, where X is the number
of colorless creatures you control.
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"Dear compatriots, I give to you, a gift. You may
fear him, and I hope you do; but, he will show you
the path to victory. Xerbias, the Pale Blood."
- Emperor Sias Gultan