Zelshak, Bringer of Chaos

First strike, haste, trample
{r}{r}{r}, Discard Zelshak, Bringer of Chaos: You
choose which creatures attack this turn. You
choose which creatures block this turn and how
those creatures block. You may reselect any
creatures to attack or block, and remove any
creatures from combat, after attackers and
blockers have been declared, but before the
damage step.