It also happened to be the last color to fill out in the color pie, so that was just perfect
The Spacecraft's ability in practice introduces numerous decision points to a game
Plagued Rusalka 7 Starved Rusalka 2.5 Scorched Rusalka 6 Martyred Ruslka 3 These are convenient little sac outlets being one mana investments and also dorks themselves

3 Blind Seer Boris Devilboon Braids, Conjurer Adept Cabal Patriarch Cadric, Soul Kindler Celes, Rune Knight Circu, Dimir Lobotomist Cynette, Jelly Drover Damia, Sage of Stone Deekah, Fractal Theorist Derevi, Empyrial Tactician Donal, Herald of Wings Dralnu, Lich Lord Dynaheir, Invoker Adept Emet-Selch of the Third Seat Emet-Selch, Unsundered Emry, Lurker of the Loch Endrek Sahr, Master Breeder Ertai Resurrected Ertai, Wizard Adept Ertai, the Corrupted Eruth, Tormented Prophet Esper Terra Eutropia the Twice-Favored Fandaniel, Telophoroi Ascian Felisa, Fang of Silverquill G'raha Tia, Scion Reborn Gadwick, the Wizened Gale, Waterdeep Prodigy Gandalf of the Secret Fire Gandalf the Grey Gandalf the White Gandalf, Friend of the Shire Gandalf, Westward Voyager Gandalf, White Rider Garth One-Eye Genku, Future Shaper Geralf, Visionary Stitcher Ghen, Arcanum Weaver Ghoulcaller Gisa Gisa and Geralf Gisa, Glorious Resurrector Glarb, Calamity's Augur Gogo, Master of Mimicry Gogo, Mysterious Mime Golbez, Crystal Collector Gorion, Wise Mentor Grandmother Ravi Sengir Grandmother Sengir Hakim, Loreweaver Haldan, Avid Arcanist

This will allow more Wolves to get in combat damage to draw cards from Tolovar
It would be a mix of abilities, almost all things the five colors can do, but mixed and matched in such a way that it could do things that couldn't normally be done in monocolor