Tasty but Deadly

{x} Tasty but Dealdy deals X damage to target player.
At the beginning of your upkeep, you may play one of the following for free (or pay the cast any time.)
{w} All creatures get +2/+1
{u} Counter all spells.
{b} All creatures opponent controls get -2/-3.
{r} Destroy all creatures you choose.
{g} Target creature gets +4/+3 and trample