The free-to-play mobile Pokmon trading card sim revolves around opening booster packs
The effect of "Krystal Avatar" activates as it was destroyed by battle, inflicting its ATK as damage to the opponent
The MTG card rarity distribution in a booster pack is a masterclass in behavioral psychology
We've scoured the market prices across each "modern" collection of cards, found out which are the most valuable in terms of TCGplayer market price, and linked to every card so you can check listings to buy one yourself, if you wish
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