Rider of the White Horse

Indestructible, shroud, horsemanship (This creature can't be blocked except by creatures with horsemanship.)
When Rider of the White Horse enters the battlefield, each other creature you control gets +3/+0 and gains first strike and vigilance until
end of turn. those creatures fights target creatures you don't control. (Each deals damage equal to its power to the other.)
"I am the first of four, bringer of conquest."