(Its not an enchantment, though.) Whenever a battle is dealt damage, that many defense counters are removed from it as the result of that damage
My favorite has to be another unique enchantment type: backgrounds
Given how fresh and new of an approach this is, I would love to hear any thoughts you have on these decks after you've played with them
Properly utilizing this card requires two things: You need to be able to empty your hand quickly (making this artifact a great discard payoff) and you cant rely on creatures as a win condition
The themes and mechanics of the deck are also a lot of fun to play with and mesh very well, with transforming cards, double-sided cards, token generation, graveyard nullification, card draw, and much more
Try it with Sai, Master Thopterist or Traxos, Scourge of Kroog