I don't. I think the dragon and angel references are there not because of an understanding of the game but rather to make it sound like what a powerful card should be. Obviously, to the reader who doesn't know MtG a rare dragon is more powerful than a rare flower, after all.

i meant that he is almost certainly referring to the shivan dragon and serra angel, two of the oldest and, at least back when i played, more sought-after cards in the standard set.

Generally we referred to them by their name, like Sengir rather than vampire; same for dragons or angels. Of course back then you only had a Shivan and the Whelp.

Some cards even had nicknames, such as Tim.

I started playing at 8th Edition, so my "classic" Dragon and Angel are Shivan and Serra, respectively. Don't know how far back those two go, though.

It was the same in Revised edition, in the early 1990's. My grade-school friends and I would, of course, fawn over the Serra Angel at lunchtime. But nobody ever acquired a Shivan Dragon, we just read about it in the catalog!

All the way back to Alpha.