Focusing on newer cards, Six allows you to retrace nonland permanent cards from your graveyard if youre itching for bodies
You can even use it to protect yourself against mill decks or save your graveyard from exile if you want to prevent a specific combo piece from going away forever
That's why it's so valuable among collectors

The Final Days Gaius van Baelsar Hecteyes Jecht, Reluctant Guardian Kain, Traitorous Dragoon Malboro Namazu Trader Ninjas Blades Overkill Phantom Train Poison the Waters Qutrub Forayer Reno and Rude Resentful Revelation Sephiroth, Fabled SOLDIER Sephiroths Intervention Shambling Cieth Shinra Reinforcements Sidequest: Hunt the Mark Summon: Anima Summon: Primal Odin Tonberry Undercity Dire Rat Vaynes Treachery Vincent Valentine // Galian Beast Vincents Limit Break Zenos yae Galvus Zodiark, Umbral God Barret Wallace Blazing Bomb Call the Mountain Chocobo Choco-Comet Clive, Ifrits Dominant Coral Sword The Fire Crystal Fire Magic Firion, Wild Rose Warrior Freya Crescent Gilgamesh, Master-at-Arms Haste Magic Hill Gigas Item Shopkeep Laughing Mad Light Of Judgement Mysidian Elder Nibelheim Aflame Opera Love Song Prompto Argentum Queen Brahne Random Encounter Raubahn, Bull of Ala Mhigo Red Mages Rapier Sabotender Samurais Katana Sandworm Seifer Almasy Self Destruct Sidequest: Play Blitzball Sorceresss Scheme Summon: Brynhildr Summon: Esper Ramuh Summon: G.F

Get four or more total wizards, and this card flips into Trance Kuja, Fate Defied, a damage-doubling engine for any wizard source you control