Its unfortunate that the card text covers up the original covers depiction of Wasp and Yellowjacket, but in order to make these cards functional in-game I guess sacrifices have to be made
(As that creature enters, you may sacrifice any number of creatures
The effect has the Giant Trap Door Spider remove itself and its target from play, not only representing it catching and dragging the victim away but also eating it
If you can afford it, then go for it, itll surely be an eye catcher
The card design itself does, establishing it as any creature not having the same power and toughness (not having what we in R&D called "square stats")
The White rare two-drop gives you hexproof, cheaper than Ivory Mask, and a harder to burn body than Aegis of the Gods or Keen-Eared Sentry