Yes, Easter is on it's way and Zynga are giving out extra goodies every time you trade in a game card...
Redeeming a card will, as well as the horseshoes, pop an Easter Mystery Crate in your inventory.
Opening that will give you some limited edition Easter decorations! An Easter Egg, a Chocolate Rabbit or one of three differently coloured marshmallow chicks:
There's also a chance to get energy, food, coins and all manner of collectibles from a variety of animal collections.
Time to get hyper with a sugar rush...? ;)