If you would lose unspent mana, that mana becomes colorless instead
Aggressive decks in Modern arent going to look like aggressive decks in Standard or Pioneer
There are 2 slots for the rare cards in every pack, they can either be: 2 rare cards 1 rare and 1 super rare 2 super rares 1 super rare and 1 legendary The enchanted cards are actually replacing the reverse-holo card in each pack, so the best value opening of Lorcana the first chapter can be: 1 super rare, 1 legendary and 1 enchanted card

Archipelagore Auspicious Starrix Boneyard Lurker Brokkos, Apex of Forever Brokkos, Apex of Forever Cavern Whisperer Chittering Harvester Cloudpiercer Cubwarden Dirge Bat Dreamtail Heron Everquill Phoenix Everquill Phoenix Gemrazer Gemrazer Glowstone Recluse Huntmaster Liger Huntmaster Liger Illuna, Apex of Wishes Illuna, Apex of Wishes Insatiable Hemophage Lore Drakkis Majestic Auricorn Migratory Greathorn Mindleecher Necropanther Nethroi, Apex of Death Nethroi, Apex of Death Otrimi, the Ever-Playful Parcelbeast Pollywog Symbiote Pollywog Symbiote Porcuparrot Pouncing Shoreshark Regal Leosaur Sawtusk Demolisher Sea-Dasher Octopus Snapdax, Apex of the Hunt Snapdax, Apex of the Hunt Souvenir Snatcher Surgeon General Commander Trumpeting Gnarr Vadrok, Apex of Thunder Vadrok, Apex of Thunder Vulpikeet
For the price of, oh, ~3 mana over 3 turns, you'll be drawing 4+ cards easily
In any case, the scenarios and moves of the players will be guessed