Even if one isn't playing those colors or doesn't have Channel-Fireball, a Black Lotus can give a nice mana bonus for a player, allowing them to play powerful cards in the early game
Lumbering Worldwagon Lumbering Worldwagon is a pretty substantial threat
Breach is more concise, relying on cards like Brain Freeze or Grinding Station to enable Thassa's Oracle
Whats funny is I didnt even realize Bruvac was a character from Ravnica, I guess it's decidedly Dimir ability and absence of any surrounding Azorius imagery led me to believe they were just some guy with a big hat
Breeding Pool Breeding Pool is the first of a whopping FIVE lands in the top ten, tapping for Green or Blue, but youll have to pay life if you dont want it to enter tapped
So yeah, Tinybones, Trinket Thief is very powerful