Grayson, the White-Clad King

Partner with Luca, Grayguard Captain.
Grayson enters the battlefield with a shield
counter. It can only have one shield counter on it.
{g/w}: Put a lifelink counter on another creature you control.
{2}{w/u}: Another creature you control is
unblockable this turn.
{4}{g/u}: Put a hexproof counter on another
creature you control.