You get at least one etched foil variant and the uncommon Mystical Archive has a 50% chance of being a traditional foil Japanese variant
Should you choose to pay a spells alternative cost, you need to remember that all additional costs (optional ones like Kicker, or compulsory ones like that of Ichor Explosion) still need to be paid additionally
Theres a reason that man-Lands like Hall of Storm Giants and Den of the Bugbear have had immense success in Pioneer compared to the Restless Lands
First, youre only allowed to search for a card with a mana value less than or equal to your land count, which means you have to reveal what youre looking for
Abuelos Awakening, meanwhile, is the reanimation engine for Omniscience, which has long been the third-best Standard deck
Sadly you can't even get there if you could cherry pick all the cards to do so