It's a good idea to either do it when you have a large number of lands out in play already, or run more extra lands cards like Exploration, Burgeoning, or Dryad of the Ilysian Grove
Once it sticks, every instant and sorcery becomes more dangerous, and Prismari only makes the math more absurd
Moreover, the decks that Bakis Curse would most be effective against are decks that want to pile on multiple Auras
I'm getting ahead of myself
If this cards total ATK points exceed 6000 ATK when it is summoned, this card cannot attack that same turn and all spell and trap cards on your side of the field are negated long as this card remains on the field
Coven - As long as you control three or more creatures with different powers, you may cast creature spells from the top of your library