Panglacial WurmI've seen sufficient debate from rules experts about whether or not Panglacial Wurm actually functions within the rules - or if it's merely accepted as an oddity and any possible rules issues brushed off. Regardless, it's odd such a nebulous rules space is permitted for a the benefit of a single card.Has WotC ever considered an erratum to tweak the rules slightly? What were the strongest arguments and obstacles that came up?Example erratum: "While you're searching your library, you may exile P.W. from your library. When you do, you may cast it from exile."This could alternatively be a rules update that formally defines how 'casting while searching' works. This particular version would have mechanical distinctions of possible relevance, but I believe it would preserve the vast majority of the card's function while making the rules surrounding it more straight-forward.

Sometimes we do something that we retroactively realize we shouldn’t have done. Our general strategy is to avoid doing it again rather than double down on figuring out how to make it work a little better.

While I loved the bizarre Kamigawa spirits, do you think it would have been/would be acceptable to make such creatures elemental spirits if they show up again? It would double down on tribal stuff of course (maybe even for the better) but it also might make people more accepting of them.

The Kamigawa Spirits weren’t Elementals in how Magic defines Elementals.

"Dupliclone is probably the best in the market, but Double Down is an up-and-comer" And how exactly do you happen to know that kind of stuff? :P

I hear things.

You need to double down on this. Between Goblin test Pilot and entwine you're not far from making sleeping one of your official duties and thereby solving your perpetual sleep shortage.

I’ve run out of time during the day to do Magic design, so I’ve had to turn to sleep. : )