So make sure to make the best out of them before their story time is up
[ Editor's Note: The updated rules for Planar Magic cap the number of phenomenon cards at two, for an individual's own Planar deck, or twice the number of players starting the game, for multiplayer games using one shared Planar deck.] Even assuming only two phenomena per deck, Interplanar Tunnel at worst puts four planes that you dont want now at the bottom of your planar deck, bringing you that much closer to the plane you are looking for
This won't touch generic mana costs or other colors, and it only works on permanents, which was clearly done to keep them from getting broken by casting free Brainstorms, counters, Lightning Bolts, Swords to Plowshares, etc
For players who want the Garchomp ex in their deck without the SAR premium, this is the practical choice
Evolves From Other cards with Burning Bonemerang Cards by Gemi Frequently Asked Questions How can I obtain the Alolan Marowak with 1-Star rarity from the Celestial Guardians set