Your search for "the fourth sphere" revealed the following:
Wooden Sphere (4ED) from Fourth Edition, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Mark Tedin Card Text:1: Gain 1 life for a successfully cast green spell. Use this effect either when the spell is cast or later...
Porthos // Neuroflux Heirloom Token (Foil) (TTRK) from Star Trek, available at 401 Games Canada. Rarity: Token Finish: Foil Artist: Brooklyn Smith & David Frasheski Card Text:Neuroflux Heirloom: Equipped creature gets +1/+1.Equip {2}
Human // Murf Token (Foil) (TTRK) from Star Trek, available at 401 Games Canada. Rarity: Token Finish: Foil Artist: David Álvarez & Leesha Hannigan Card Text:Human: Permanents can't phase in.Murf: Indestructible