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
This is one of those cards which is made worse by looking at the flavour text, which reads: They call it stitchers anaesthesia, a spell to deaden the senses while the mad doctors begin their grisly work. That means that this person is not only alive, but about to be butchered and probably sewn onto a bunch of other people to make a Skaab Goliath or something
In another first for MTG, its five primary cards will be 'reversible', featuring illustrations on their front and back
Cast it, plus discard an expensive card to wrath all of my opponent's creatures and planeswalkers
It is a reminder of how underexplored this cozy side of Pokmon really is, and how compelling it can be for fans