The reasoning is that they are worth two points, so losing one quickly turns the tide in favour of your opponent
For more info on the lore, you can take a look at the trailer video below, shared via the official Lorcana website
If this card destroys itself: You can target 1 Dinosaur-Type monster in your Graveyard
it basically renders weighing worthless and guarantees you get a fair chance of pulling rare cards
The Key Rules Of MTG Extort As you can see, Extort is easy to use, but there are some key rules: You can use Extort only on activated abilities of cards that have the Extort keyword
Notably, casting a multicolor card will trigger two or more of these abilities, making Aragorn more efficient and rewarding for players using him in a color-heavy deck with lots of multicolor cards -- of which Tales of Middle-Earth has plenty