Colonel Kurtz

{r}Target opponent chooses any number of
creatures they control. During that player's next
turn, the chosen creatures attack if able, and
other creatures can't attack. At the beginning
of that turn's end step, destroy each of the
chosen creatures that didn't attack this turn.
When Colonel Kurtz leaves the battlefield,
it turns into Gabriel Goto, a Warrior Poet
from he Baroque Cycle.