Gates of Hell

Gates of Hell enters the battlefield tapped.
{t}: Add {b} or {r}. Gates of Hell deals 1 damage to you.
{3}{r}{b}, {t}: Target opponent may discard their hand, sacrifice 3 creatures, and lose 5 life. If they don't, sacrifice Gates of Hell and return target demon creature from your graveyard to the battlefield. It gains haste until end of turn.