The problem is that tokens and basic lands show up in every single pack, which means their supply and prices will be heavily dictated by just how much Unstable sells overall, which in turn means any discussion of Un-set finance is built on the foundation of total demand for the product and set sales
This was partly because there wasn't a need for them and partly because we were being a little shy due to their over-performance in tournament formats
Still, 2 mana to kill anything in one shot is worth consideration, especially in a color that typically lacks removal
Ragavan, Nimble Pilferer is so strong that it had to be banned in Legacy, currently terrorizes Modern as part of Boros Energy, and it's very often seen as part of the 99 of top-tier cEDH decks
The art is pure gothic horror, and the name Sengir has become synonymous with vampires in Magic lore
Turn one goes to turn three and its a free pass on Commander tax