Yes, Plague Rats first appeared in Limited Edition Alpha (Magic's very first set), making it Magic's very first rat
The end result is that blue-black has three main ways to win
Sadly the Nacatl only really finds a home in the various incarnations of Zoo which range from 3 to 5 colours but always include the all important Naya colours
Older out-of-print cards at premium prices attract more sophisticated fakes
This deck has a fairly reliable sacrifice outlet in its commander, and if you have Titania, Protector of Argoth on the field each of those lands hitting the graveyard will give you a 5/3 Green Elemental creature token
The value can vary, but Japanese cards are often more valuable due to their rarity, unique artwork, and superior print quality