(A creature with intimidate can't be blocked except by artifact creatures and/or creatures that share a color with it.) Whenever a nontoken creature is put into your graveyard from the battlefield, you may pay
Adding red also meant that various Heat Shimmer effects put in serious work
Theres truly nothing this Gondorian King cant do
If that player casts another spell, it is assumed that each other player has also passed priority, which caused the first spell to resolve and the first player to receive priority again
Junji is there mostly for the trigger, though, not the beats
The reason being, you're getting your three cards from damaging each opponent, but you're probably also taking out hordes of tokens and utility creatures along the way, which is ultimately more impactful