If you use the Target Cartwheel app, there's a coupon under "toys" for MLP items through 10/31. It says you can use it on up to 4 items per transaction.
It says:
"Trick or Treat with My Little Pony! Friendship is Magic on Halloween and everyday with My Litle Pony. Look for the Pinkie Pie Boutique exclusive, available only at Target, and save on your favorite My Little Pony toys!"
Exclusions : excludes My Little Pony Equestria Girls
Offer ID: 2414
Offer Expires: October 31, 2013
Brand: My Little Pony
Category: toys
Offer valid in store only. Limit no more than one manufacturer coupon, one Target coupon and one Cartwheel offer can be combined per item. Scan all other coupons before scanning your Cartwheel barcode in store. Each Cartwheel offer may be used for up to a maximum of 4 qualifying items per offer per transaction, unless otherwise noted. Limit of 1 Cartwheel barcode per transaction and 6 Cartwheel barcode transactions per day. Void if copied, scanned, altered, transferred, purchased, sold, or prohibited by law. Item(s) may not be available at all stores. Not valid in Canada. Offer value may not exceed value of item purchased. No cash value.
Even if you don't have a smartphone, you can use it online and print off your barcode after adding your coupons. (: