Forum:Obelisk Gold Series Ruling

The Obelisk the Tormentor card I pulled from a Gold Series has the effect: "This card cannot be targeted by Spells, Traps, Spell/Trap effects, or Effect Monsters effects." My question is: what does the "Spell/Trap effects" part of this sentence mean, and how is it different from the spells and traps themselves??

24.229.167.107 (talk) 02:40, July 10, 2011 (UTC)