Assertion: spider's egg | /r/HasProperty | spawn
Facets:
Source sentences:
text: In the Nether, a spider spawned there with a spawn egg, commands or spawners, has a 0.8% to spawn a wither skeleton on its back and form a wither jockey instead.
text: In the Nether, a spider (spawned with a spawn egg, commands or spawners, since these do not naturally spawn there) has a 0.8% chance to spawn a wither skeleton on its back and form a wither jockey instead.