(Who would have thought it after the previous two Secret Missions) This mission does not include the Immersive Pikachu ex card
100 cards stacked with sleeves can be a very shaky affair, and in the heat of battle, you often pull from the discard pile or the cards mix, and the game is over before it has started
Reen sees all species: chitinous quadrupedal Eumidians, squat tusk-toothed Kavs, gracefully gelatinous Illvoi, even a solitary Drix engineer, slender gray body swathed in billowing mbius strips
Having some variance is fine, and even arguably desirable so newer players can have a chance against more experienced ones, but too much is annoying, both for the loser and for the winner (I once played Seismitoad-EX / Giratina-EX and won a series where I hit twelve heads out of thirteen on my various flippy cards
Try not to be put off by these numbers, mastering the set is achievable
You've got yourself a bona fide MTG infinite combo