At the beginning of your upkeep, if this enchantment has ten or more luck counters on it, you win the game
It's very strong in a duel
The Prince Never Gives Up is a very good defensive card that will probably see a decent amount of play

The Final Days Gaius van Baelsar Hecteyes Braska's Final Aeon (Jecht, Reluctant Guardian // Braska's Final Aeon) Jecht, Reluctant Guardian (Jecht, Reluctant Guardian // Braska's Final Aeon) Kain, Traitorous Dragoon Malboro Namazu Trader Ninja's Blades Overkill Phantom Train Poison the Waters Qutrub Forayer Reno and Rude Resentful Revelation Sephiroth, One-Winged Angel (Sephiroth, Fabled SOLDIER // Sephiroth, One-Winged Angel) Sephiroth, Fabled SOLDIER (Sephiroth, Fabled SOLDIER // Sephiroth, One-Winged Angel) Sephiroth's Intervention Shambling Cie'th Shinra Reinforcements Yiazmat, Ultimate Mark (Sidequest: Hunt the Mark // Yiazmat, Ultimate Mark) Sidequest: Hunt the Mark (Sidequest: Hunt the Mark // Yiazmat, Ultimate Mark) Summon: Anima Summon: Primal Odin Tonberry Undercity Dire Rat Vayne's Treachery Galian Beast (Vincent Valentine // Galian Beast) Vincent Valentine (Vincent Valentine // Galian Beast) Vincent's Limit Break Shinryu, Transcendent Rival (Zenos yae Galvus // Shinryu, Transcendent Rival) Zenos yae Galvus (Zenos yae Galvus // Shinryu, Transcendent Rival) Zodiark, Umbral God Barret Wallace Blazing Bomb Call the Mountain Chocobo Choco-Comet Ifrit, Warden of Inferno (Clive, Ifrit's Dominant // Ifrit, Warden of Inferno) Clive, Ifrit's Dominant (Clive, Ifrit's Dominant // Ifrit, Warden of Inferno) 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 Judgment Mysidian Elder Nibelheim Aflame Opera Love Song Prompto Argentum Queen Brahne Random Encounter Raubahn, Bull of Ala Mhigo Red Mage's Rapier Sabotender Samurai's Katana Sandworm Seifer Almasy Self-Destruct World Champion, Celestial Weapon (Sidequest: Play Blitzball // World Champion, Celestial Weapon) Sidequest: Play Blitzball (Sidequest: Play Blitzball // World Champion, Celestial Weapon) Sorceress's Schemes Summon: Brynhildr Summon: Esper Ramuh Summon: G.F

Managorger Hydra Tied with Mossborn Hydra The number one slot had to be shared with the two Hydras with excellent abilities and super low casting costs
Omarthis, Ghostfire InitiateOmarthis, Ghostfire Initiate costs XX and has power/toughness X, and gets a +1/+1 counters occasionally