Kologhan, Rageborn

Trample, Dash {1}{b}{r}. (You may cast this spell for its dash cost. If you do, it gains haste,
and its returned from the battlefield to its owners hand at the beginning of the next end step.)
Whenever Kologhan, Rageborn attacks, you
may pay {b/r}{b/r}{b/r}{b/r} and sacrafice a creature.
If you do, each opponents loses 5 life.