It gives you consistent value with a scry 1 every time a creature ETB's under your control, and the second time that happens in a turn, you get to draw a card
Since these cards changed constantly, they were made fast and cheapoften just paper with typed or handwritten notes, or even simple doodles standing in for art
If you build around legendary creatures, dont forget about this white enchantments anthem effect
Once this choice is made, it can't be changed later while the spell is on the stack
Anyone who has played some amount of Commander, Legacy, or Vintage should be aware of this cards prevalence
Amethysts magical potential makes it one of Lorcanas most varied and powerful ink colours in the right deck, opening up some of the trading card games most exciting strategies and combinations