If you want to read a bit more about what the rotation is, feel free to check this article
Collectors Gems : With 17 ultra-rare cards and stunning silhouette-style artwork, these cards are must-haves for your Pokmon card collection
I ended up changing it to load all the image files externally, as I needed to do that to handle loading custom cards anyways, plus it helps reduce the file size for each time a new set came out, since not everyone has fast internet and 8 GB is a large download every 2-3 months
Drawing a card whenever you cast a spell with mana value 5 or greater is excellent with sweepers like pre-rotation Sunfall, where you can kill every creature and draw a card, with removal spells like Leyline Binding, or with the various Overlords that can enter the battlefield for cheap via impeding, like Overlord of the Hauntwoods
The recent bannings make that use-case less appealing, but its still a useful and flexible card
That probably means that hes going to be key in any future stories about those people and their struggles with the Eldrazi