Like most Magic: The Gathering cards, the value of Kiora, the Rising Tide depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Foundations)
An MTG crossover could shoot this new Star Wars TCG in the foot, as they would have to design their game and cards in a way where they werent stealing any of the ideas Wizards came up with in a Universes Beyond set
They're not strong enough for competitive play, and in most casual play groups I've been in, people ask that cards like Jokulhaups and Decree of Annihilation aren't included in decklists so it's not difficult to extend those house rules to other similar spells
Lands arent sacred
This is the second Friday after official commercial release, not the second Friday after early preview events, called prereleases, take place