Whenever Rundvelt Hordemaster or another Goblin you control dies, exile the top card of your library
You cant sacrifice a Rat Colony, then target it with the activated ability
Kumena works best in a deck that's popping out lots of little Merfolk tokens, because all three of his abilities are hinged on tapping your mermen
That's right, you can get two Dracula series cards by purchasing a Set, Draft, or Collector Booster display from your local WPN store while supplies last
Youll always find a couple of cards in a Lorcana booster pack that are Rare or better
All in all, it seems to be a combination of high demand for 1/1 Red Goblin tokens in general, combined with the sweet art and low supply of the New Phyrexia version that gives this token its $1.99 price tag