And while theres no place for it in modern decks (if you really want to gain life per turn, there are better ways to do it), its an interesting bit of MTG history behind it so much so that Wizards reprinted it in the Brothers War: Retro Artifacts set
Those tokens supercharge Kappa Cannoneer, grow the Constructs from Urza's Saga, and can be translated into lethal damage through Engineered Explosives for X=0
So M Sceptile-EX provides that acceleration while also healing your Pokemon, with Jagged Saber and doing 100 damage
The market also has its own ebbs and flows
If you're looking to enhance your army, Glacial Plating, Ascendant Spirit, Narfi, Betrayer King, and Rimefeather Owl all provided increasingly powerful damage outputs as the game goes on