They're a valuable tool in our toolbox, and we keep coming up with different ways to use them, For flavor, we wanted the creature to form waves to attack
They show up in the Aether Revolt ones, but for a few months there nobody had a specially labeled token to denote their current energy count
With extra untap spells, we can use Stellas ability to aid us in stack wars or double copy a value spell such as a wheel with Breach out, or even just have three copies of Consider on the stack
You need to maintain a spreadsheet of all the Rares and Mythics in the set, have it open while you're drafting, and update it after every Rare/Mythic pick
Theres also Silverquill students, who specialise in verbal magic, and cast white and blue spells, and Witherbloom students, who cast nature spells in green and black
This allows you to reveal up to 1 Slash attribute card or Green Event and add it to your hand