Other than the obvious benefit of this protecting your spells from hand disruption like Thoughtseize and Duress, foretell costs often make a card cheaper to cast as well
Enchantment - Aura Jeska, Thrice Reborn Jeska enters with a loyalty counter on her for each time you've cast a commander from the command zone this game
This Treefolk Druid makes it so all of our creatures that die will come back face down as a Forest, which will trigger all Landfall abilities
In set design, this role of "villain mechanic" was filled by black mage tokens and flashback
The full titles for the seven cards revealed so far are Stitch - Rock Star, Elsa - Snow Queen, Cruella de Vil - Miserable as Usual, Maleficent - Monstrous Dragon, Robin Hood - Unrivaled Archer, Captain Hook - Forceful Duelist and Mickey Mouse Brave Little Tailor
The other card will remain in exile indefinitely