I think there should be Wands given to specific wizards on specific worlds.
Here are some Ideas:
Electric Rod: Given at Marleybone when you finish the main quest. Storm Only Gives Two Minor Spell Cards: Minor Jolt (70 Storm Damage) and a Wild Bolt Spell It will also give a plus 2% Accuracy to all schools.
Dragon's Septer: Given at Dragonspyre when you finish the main quest. Fire Only Gives Two Minor Spell Cards: Firenova (95 Fire Damage) and a Dragon Spell. It will also give a 2% plus to damage to all schools.