Void the Tank

Partners with Violet the Spell Slinger or a legendary creature that's only {r}, only {u}
or only {r} and {u}.
{r}{r}{t}: Deal 5 damage to target creature.
{u}{u}{t}: Give ward {2} to all of creatures you control.
{x}{t}: Give all red or blue creatures +1/+1
{x} times till end of turn. The third ability can be played as flash.