Enchanted creature has menace and "Whenever this creature deals combat damage to a player, create a Treasure token." (It can't be blocked except by two or more creatures
If the rare case where you control two of The Earth Crystal, the number of +1/+1 counters put on a creature is four times the original number
The original Khans of Tarkir (due to a lot of work by Erik Lauer) is considered the first time R&D really handled three-color design well
It asks you to play control, but also gives you cards for your troubles solving one of the issue with control in non-blue decks in Commander
4 mana is a lot to pay for scry 1, then draw a card or play a land, but when you have nothing better to do with your mana, this card will pull you far ahead at a surprisingly quick pace
Alongside these powerful legends, Maralen, Fae Ascendant has also been proving popular thanks to supporting a forgotten archetype