If the cost is paid as that stack resolves then the targeting spell or ability resolves
7: You get an emblem with "At the beginning of your upkeep, you may cast a legendary spell from your hand, from your graveyard, or from among cards you own in exile without paying its mana cost." Legendary Planeswalker - Kaya Target Disruption (CTRL to add secondary) Tokens Felisa, Fang of Silverquill Flying Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.) Whenever a nontoken creature you control dies, if it had counters on it, create X tapped 2/1 white and black Inkling creature tokens with flying, where X is the number of counters it had on it
Aragorn, Company Leader (Colorless, Green, White) Aragorn, the Uniter (Red, Green, White, Blue) Arwen, Mortal Queen (Colorless, Green, White) Arwen Undmiel (Green, Blue) The Balrog, Durins Bane (Colorless, Black, Red) Bilbo, Retired Burglar (Colorless, Blue, Red) Butterbur, Bree Innkeeper (Colorless, Green, White) Denethor, Ruling Steward (Colorless, White, Black) Elrond, Master of Healing (Colorless, Green, Blue) owyn, Fearless Knight (Colorless, Red, White) Faramir, Prince of Ithilien (Colorless, White, Blue) Frodo Baggins (Green, White) Galadriel of Lothlrien (Colorless, Green, Blue) Gandalf the Grey (Colorless, Blue, Red) Gimli, Mournful Avenger (Colorless, Red, Green) Gwaihir the Windlord (Colorless, White, Blue) King of the Oathbreakers (Colorless, White, Black) Legolas, Counter of Kills (Colorless, Green, Blue) Lotho, Corrupt Shirriff (White, Black) Mauhr, Uruk-hai Captain (Black, Red) Merry, Esquire of Rohan (Red, White) The Mouth of Sauron (Colorless, Blue, Black) Old Man Willow (Colorless, Black, Green) Pippin, Guard of the Citadel (White, Blue) Prince Imrahil the Fair (White, Blue) Rise of the Witch-king (Colorless, Black, Green) Samwise Gamgee (Green, White) Saruman of Many Colors (Colorless, White, Blue, Black) Sauron, the Dark Lord (Colorless, Blue, Black, Red) Shadowfax, Lord of Horses (Colorless, Red, White) Shagrat, Loot Bearer (Colorless, Black, Red) Sharkey, Tyrant of the Shire (Colorless, Blue, Black) Shelob, Child of Ungoliant (Colorless, Black, Green) Smagol, Helpful Guide (Colorless, Black, Green) Strider, Ranger of the North (Colorless, Red, Green) Thoden, King of Rohan (Colorless, Red, White) Tom Bombadil (White, Blue, Black, Red, Green) Uglk of the White Hand (Colorless, Black, Red) If this interests you be sure to check out what contents are in the LOTR MTG Collectors Box!
A card that's been foretold can technically also be cast for free, like Scorn Effigy, but most of the time the foretold cost is greater than 0 , sometimes by a lot
once it did, many other non-Simic commanders got abandoned in order to play the Prophet, which was simply not a great direction for the format
