It is slightly worse than Growth Spiral, since you can only play a land from the top four cards of your deck, rather than taking one directly from your hand and putting it into play, but still very good
Its fair to say that Disneys Lorcana Trading Card Game has been a huge success, both commercially and critically
The line about casting The Indomitable from your graveyard is mostly flavor text, and this card isnt so powerful that youll suddenly see a massive surge in aggressive blue decks in Cube, but it does move the needle, and I would expect to see it in any Cube supporting Pirates as a creature type as well
Then you can use the 'mine vibranium' ability to put all those counters onto a creature (be it Black Panther himself or a tiny token), gain a bunch of life, and draw a card
Gaining anywhere from three to six life per game, just by casting your Planeswalkers and playing your lands, is a pretty good deal
The card draw in this deck isnt really significant thanks to the lack of power in the cards you can draw