If youre running a lot of cards with low mana value, this black artifact becomes a card-draw engine that only costs you a bit of life for each new card
In fact, a resolved Teferi, Time Raveler will probably be game against any grindy matchup, where opponents will have to cast their Vraskas Contempts at sorcery speed
Still, this is powerful, and Ive been wrong at least once before
Throw in a Lavaspur Boots off the Urzas Saga tutor ability, and youre swinging in for 13 damage on your third turn with a Mox Opal start
2 Ugin's Labyrinth An Early Chalice of the Void Enabler & More If Urza's Cave is an obviously potent card for trying out in Tron strategies, then Ugin's Labyrinth is a must-include
Split Decision You might think Im crazy, but hear me out