The cost reduction applies only to generic mana in the total cost of legendary creature spells you cast

$0.79 The Ultimate Nightmare of Wizards of the Coast Customer Service Unglued $69.99 Bolas's Citadel (0007 - Kefka's Tower) Final Fantasy Through the Ages $0.49 Wall of Omens (0027 - The Imperial City of Archades) Final Fantasy Through the Ages $89.99 Yuna, Grand Summoner (0208 - Borderless) Final Fantasy Commander Decks Variants $9.99 Vincent Valentine (0383 - Borderless) Final Fantasy Variants $59.99 Dark Ritual (0008 - Darkness of Eternity) Final Fantasy Through the Ages $11.99 Bruse Tarl, Boorish Herder (0050 - Hugo Kupka) Final Fantasy Through the Ages $279.99 Atraxa, Grand Unifier (0049 - Sephiroth, the Savior) Final Fantasy Through the Ages $29.99 Sram, Senior Edificer (0003 - Firion, Swordmaster) Final Fantasy Through the Ages $17.99 Firion, Wild Rose Warrior (0531 - Borderless Surge Foil) Final Fantasy Variants $99.99 Nyxbloom Ancient (0016 - The Cloudsea Djinn) Final Fantasy Through the Ages $199.99 Sephiroth, Fabled SOLDIER (0317 - Borderless) Final Fantasy Variants 0 results found

This is free, costs the same to drop, and just sacs that color of land
Red is the best, and this splashable four-cost one will have everyone may discard and draw five, so no one has too, and then foes will eat five damage too
Changelings Since worthy Apes and Monkeys are a bit less in number than a typical Tribal deck wants, Ive rounded out the numbers with some quality creatures with the changeling ability, particularly lower on the mana curve
This means, for example, that a Modular creature would come into play without it's +1/+1 counters and then be destroyed by state based effects