I've given too much thought to this, so prepare for a long post (and even then, this still isn't every move I'd like to see...)
Quicksand
Type: Ground
Designation: Status
Effect: Pokemon is trapped (can't switch out)
Tarpit
Type: Poison
Designation: Status
Effect: Pokemon is trapped (can't switch out)
Radioactivity
Type: Poison
Designation: Status
Effect: Pokemon releases radioactive dust into the air that will either burn, paralyze, or poison Pokemon who switch in (in the Spikes, Toxic Spikes, and Stealth Rock family)
Identity Theft
Type: Dark
Designation: Status
Effect: Pokemon copies the stats of the opposing Pokemon
Meteor Shower
Type: Dragon
Designation: Status
Effect: Weather condition which damages all Pokemon who aren't Dragon-type
Itching Powder
Type: Poison
Designation: Physical
Effect: User scatters power that lowers opponents Defense and Special Defense one stage.
Garrote
Type: Dark
Designation: Physical
Effect: Does more damage the slower the opponent is compared to your Pokemon (and has no effect if opponent is faster)
Clockwork
Type: Psychic
Designation: Status
Effect: User raises speed by one stage of all allies and lowers speed by one stage for all opponents for one turn (best used in double or triple battles)
Joust
Type: Steel
Designation: Attack
Effect: Priority +2 attack
Slick/Slippery
Type: Ice
Designation: Status
Effect: Covers field in ice. Pokemon that receive a physical hit get switched out (applies to both sides).
Miasma
Type: Poison
Designation: Special
Effect: Weather condition that deals damage to all Pokemon who aren't Poison or Steel-type.
Heavenly Light
Type: Psychic
Designation: Status
Effect: Weather condition that heals all Pokemon that are Psychic types.