Aaron, Herald of Doom

{w}{t}: Gain X life where X is Aaron's power.
{g}{t}: Target creature gets +X/+0, where
X is Aaron's power.
{r}{t}: Deal X damage to target creature or planeswalker where X is Aaron's power.
{u}{t}: Scry X where X is Aaron's power.
{b}{t}: Mill X where X is Aaron's power.