Similar to the Mox artifacts, Black Lotus costs zero mana, so you can play it on your first turn along side a land, but adds three mana of any one color when you sacrifice it
If you're playing Aristocrats, Mill, or Reanimation, or can produce infinite black mana in some way, he's likely going to be one of your win conditions
Once you do, the Giganotosaurs destroys all artifacts and creatures in play except for itself
However, it's flexing black's color pie identity in a way we've not seen before
Mind Games (Tempest/Stronghold/Exodus) Remember how I mentioned that Blue was the color of slowing things down during the hectic days of Tempest Block limited
To be silly, I usually start the game by randomly selecting one general from the choices below (I "mill" until I find a general, then reshuffle).