Chaos Wizard

At the beginning of your end step, put a +1/+1 counter on target creature you don't control.
{u}{u}: Tap target creature with a +1/+1 counter
on it.
{r}{r}: Deal 1 damage to target creature with a
+1/+1 counter on it.
{w}{w}: Target creature gains protection from
creatures with a +1/+1 counter on it until end of
turn.