Some enemy Pokmon can transform some Pokmon in your squares into others (usually, by Pokmon that do not deal a lot of damage to them, like an Electric-type Pokmon summoning some on your field to counter your ultra-effective Rock-types)
To protect them, keep your cards in protective sleeves and store them in a cool, dry location, away from direct sunlight
The game needs more interesting Esper legends, and Raffine is pushing in that direction
Ready-to-play starter decks contain a preconstructed deck with a specific card list
A First Look at Booster Fun The One Ring and Rings of Power aren't the only ways we're sharing more beautiful artwork and storytelling for The Lord of the Rings: Tales of Middle-earth
Creating a baseline 2/1 myr and turning your, say, Treasure tokens into that is very powerful, but thats just the beginning