Granted Power: Rebuke or command spiders as an evil cleric rebukes or commands undead. You can use this ability a number of times per day equal to 3 + your Cha modifier.
Spider Domain Spells
1 Spider Climb: Grants ability to walk on walls and ceilings.
2 Summon Swarm: Summons swarm of bats, rats, or spiders.
3 Phantom Steed*: Magic horse appears for 1 hour/level.
4 Giant Vermin: Turns centipedes, scorpions, or spiders into giant vermin.
5 Insect Plague: Locust swarms attack creatures.
6 Spider Curse†: Turn humanoid subject into a drider.
7 Stone Spiders†: Transform pebbles into monstrous spider constructs.
8 Creeping Doom: Swarms of centipedes attack at your command.
9 Spider Shapes†: Polymorph one creature/level into monstrous spider.
*Has a vermin shape.
Source: Spell Compendium