It already has the ability itself, so it can come down and start doing work immediately, and then it hands a big pile of keywords, including haste, to your other spiders at the beginning of combat on your turn
Many cards arent discarded, though, instead cycling to two dedicated reserve spots that allow them to be recast the next round, often for a different mana cost - more, or less - and with the potential to gain new abilities by reappearing from the reserve
Goblin Welder Market Price: $19.83, Foil: $277.21 Now were starting to get into the heavy hitters
Koffing - Darkness - HP60 Basic Pokemon [C][C] Confusion Gas: 20 damage
If youre interested in pulling off some unique draft combos in this set, this set of articles are for you
Additionally, this seems like it can get out of control, with new creatures like ED-E, Lonesome Eyebot and Craig Boone, Novac Guard giving you massive benefits from the number of quest counters on them