conjure sand mage's familiar

you create a portal of sand and conjure a familiar which can be found in deserts.the famailiars you can summon only can be  a 0 a 1/8 or a 1/4 challange rating beast.you can choose from a few familiars:Giant lizard,Vulture,Scorpion, giant wolf spider,giant lizard,Giant poisonious snake,Poisonious snake,Stirge,Jackal