Doctor's companion (You can have two commanders if the other is the Doctor.) The first ability of Bill Potts will trigger as long as it is the only target of that spell or ability, even if that spell or ability could target multiple permanents
But there are two factors that make this card better than it initially appears
Rating: 1/5 Legend of the Sword in the Stone I like that there is consistency in Amethyst this set where when you acquire a sword, you gain Challenger +3
6 thematically-related commons and uncommons
Im not entirely convinced that a 1/1 has all that much impact, but it can do a job against decks without Day of Black Sun

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
