Yes, I was hinting at an equipment with "Sword" in its type line when I made Vengeful Sayaka as some of you guessed. I wanted to try doing something that Wizard occasionally does by referencing cards that don't exist yet in other cards that have either been spoiled or already released.

I think the first real example of this practice was Shield of Kaldra which referenced Helm of Kaldra before Fifth Dawn was released.

What do you guys think? Is this design space worth exploring? I would want all equipment printed in the past to be updated with types to fit the new rule of course, but Wizards have proven they're not above going back and modifying old cards to fit with current designs, so I think it could work.

It's like a more specialized version of equip, which is why you could design a card that without it's ability is identical to Warpath Ghoul in CMC and power/toughness.