Sedge Troll is a 3-mana 2/2 that can regenerate for a single Black mana. The Troll also gains +1/+1 if you control a swamp - which includes dual lands that have Swamp as a type such as Badlands. Honestly, a 3/3 for 3 mana that can easily regenerate so easily is pretty solid. In Old School Magic, he’s actually a solid mid-range creature!
So if you ever come across Sedge Trolls in your travels, whether they be the uber-expensive Alpha or Beta black-bordered printings, or the white-bordered Unlimited or Revised printings, don’t overlook them. Not only was Sedge Troll a really good creature in the early days of Magic, and a piece of Magic’s long history, but he’s a great financial investment, as well. That is, for the right price.