When hes played, the player may discard a card to deal 2 damage to a chosen character
And meanwhile, you can prevent damage folks would deal to keep your Gideon alive and racking up those sweet sweet loyalty counters

Azami, Lady of Scrolls Azusa, Lost but Seeking Ben-Ben, Akki Hermit Boseiju, Who Shelters All Brothers Yamazaki Dosan the Falling Leaf Eiganjo Castle Eight-and-a-Half-Tails Godo, Bandit Warlord Hall of the Bandit Lord He Who Hungers Hikari, Twilight Guardian Hisoka, Minamo Sensei Honden of Cleansing Fire Honden of Infinite Rage Honden of Life's Web Honden of Night's Reach Honden of Seeing Winds Horobi, Death's Wail Iname, Death Aspect Iname, Life Aspect Isamaru, Hound of Konda Jugan, the Rising Star Keiga, the Tide Star Kiki-Jiki, Mirror Breaker Kiku, Night's Flower Kodama of the North Tree Kodama of the South Tree Kokusho, the Evening Star Konda's Banner Konda, Lord of Eiganjo Kumano, Master Yamabushi Kuro, Pitlord Marrow-Gnawer Masako the Humorless Meloku the Clouded Mirror Minamo, School at Water's Edge Myojin of Cleansing Fire Myojin of Infinite Rage Myojin of Life's Web Myojin of Night's Reach Myojin of Seeing Winds Nagao, Bound by Honor Night of Souls' Betrayal Oathkeeper, Takeno's Daisho Okina, Temple to the Grandfathers Ryusei, the Falling Star Sachi, Daughter of Seshiro Seizan, Perverter of Truth Sensei Golden-Tail Seshiro the Anointed Shell of the Last Kappa Shimatsu the Bloodcloaked Shinka, the Bloodsoaked Keep Shisato, Whispering Hunter Shizo, Death's Storehouse Sosuke, Son of Seshiro Takeno, Samurai General Tatsumasa, the Dragon's Fang Tenza, Godo's Maul The Unspeakable Untaidake, the Cloud Keeper Uyo, Silent Prophet Yosei, the Morning Star Zo-Zu the Punisher

The mantra is Quest early, Quest often and it just works
Yes, the front half turns your legends into mana dorks, but no one ever casts Esika
Here are some of the best cards in the Final Fantasy Crossover pack in MTG: Arena