Carl, the Invoker

{r}{r}{r}: Deal 4 damage to any target.
{u}{u}{u}: Tap target nonland permanent, it does
not untap during its owner's next untap step.
{w}{w}{w}: Deal 1 damage to each player for each
land they control.
{r}{r}{u}: Summon two 1/1 red Forged Spirit creature tokens with haste.
{u}{u}{w}: Carl, The Invoker phases out.
{w}{w}{r}: Give target creature +1/+1, haste and
double strike.