Your search for "Strider Harness 207" revealed the following:
Strider Harness (Foil) (SOM) from Scars of Mirrodin, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Matt Stewart Card Text:Equipped creature gets +1/+1 and has haste.Equip 1
Strider Harness (Foil) (OGW) from Oath of the Gatewatch, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Kev Walker Card Text:Equipped creature gets +1/+1 and has haste.Equip 1
Strider Harness (SOM) from Scars of Mirrodin, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Matt Stewart Card Text:Equipped creature gets +1/+1 and has haste.Equip 1
Strider Harness (Foil) (RIX) from Rivals of Ixalan, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Kev Walker Card Text:Equipped creature gets +1/+1 and has haste.Equip 1 (1: Attach to target creature you control. Equip only as a...