If an effect refers to a card or spell that was foretold, it means a card put in the exile zone as a result of the special action associated with a foretell ability, or a spell that was a foretold card before it was cast, even if it was cast for a cost other than a foretell cost
Suggested cards: Goblin Engineer - I don't know about you, but I smell graveyard shenanigans here Combat Celebrant - Multiple combat steps to pulverize your opponents Imperial Recruiter - Weenie-tutor en-masse Memorial Vault Red card draw has come a long way from rummaging spells, and Memorial Vaul t is proof
The answer is a resounding yes, and MTG players are already well aware of it
One of the most famous is energy, a mechanic that debuted with Kaladesh and swiftly overwhelmed Standard, which led to a slew of bans at the time
When tutoring for enchantments that aren't auras, the best one to get first is Sterling Grove to protect your other enchantments, followed by Destiny Spinner so they don't get countered