Kasai, Aberant Sorcerer

Prevent all damage that would be dealt to Kasai.

{w}{w}: Exile Kasai until the end of turn.
{b}{b}: Destroy target creature.
{r}{r}: Deal five damage to any target.
{g}{g}: Regenerate Kasai.

{1}{w}{b}{r}{g}: Until end of turn, Kasai gains shroud, and all other creatures cannot attack or block.