Vaevictis Asmadi

Flying
{b}Vaevictis gets +1/+0 until end of turn.
{r}Vaevictis gets +1/+0 until end of turn.
{g}Vaevictis gets +1/+0 until end of turn.
At the beginning of your upkeep, sacrifice Vaevictis Asmadi unless you pay {b}{r}{g}.