Before we get going: a quick clarification
Gratefully, Digital Eclipse included scanned manuals for each game in the collection, which walk you through the deck editing and card battling processes
The last aspect of dueling is a couple of variations on the rules, such as tag-duels and turbo duels
Later, in Fallen Empires, caving both to practical concerns and the average tabletop players innate need to collect everything even remotely peripheral to their respective game, MTG maker Wizards of the Coast released a sheet of small, square tokens in magazine The Duelist
Once per turn, you can activate 1 of these effects. Target 1 monster on the field
You have a few cards that you might be able to use to remove enchantments almost as an afterthought, but nothing nearly as direct as a simple Oblivion Ring or Naturalize