The Tate & Liza currently take the place of the 4th Professor Sycamore due to their secondary function as a draw Supporter
Its more interesting as a big mana rock, especially with how many cards weve seen that make you want to spend 7 or even 8 mana to use them
You can win games basically with just this card if your opponent has a shaky keep
After trigger even just once or twice, Ob Nixilis can deal severe amounts of damage both directly and through combat using its ever-growing offensive capabilities
Even if you draw it late, assuming you have some energy, it can just come down and buff one of your creatures immediately
Karlach, Tiefling Guardian Legendary Creature Tiefling Barbarian First strike, haste When this card specializes from your graveyard, return it from your graveyard to the battlefield