Renaissance Fair magic! Bill Palmer has published a booklet on the subject that is a must have for any beginner in the field.
To help you flesh out a character and what a Renaissance period magician might perform I offer this:
During the peak of the Renaissance period and when it was in full flourish throughout Europe itinerant performers were plentiful throughout the various countries, Kingdoms, Dukedoms, and Papal holdings. Magicians were amongst them. Market Fairs were well established and the center of entertainment and it was a poor market fair that didn't have at least one magician.
Today's Renaissance Fairs are poor shadows of some of the large fairs held during the period.
Tricks that are well recorded for this period include a lot of blood and gore. Decapitation effects were very popular. Cutting off a head or piercing an arm or neck with a knife of skewer was performed regularly. Swallowing and regurgitating was very prominent for some reason. Human fountains had been popular acts since the late 1500's.
Every woodcut or painting from that era depicting a magician shows him performing the cups and balls. Dice tricks were also popular, yes Dice as we know them were around then!
Card tricks were also very popular. Cards as we know them, four suits, and the Page, Knight (Knave), Queen, King (making a deck 56) were actually available. They did not have indexes nor did they have back designs. They were plain white cards and usually printed via a woodcut technique. These were fairly common.
The linking rings (YES THE LINKING RINGS) were being performed during this period. Damautus, a Spanish Knight performed the linking rings before Charles V, King of Spain in the mid 1500's. He showed several solid, separate metal rings, and then tossed them into the air. When He caught them, they were linked into a chain! So much for the Chinese origin of this trick!
In 1599 King James of England wrote about Hieronymus Scotto's skill at conjuring with cards. He could produce any card named! He could also visibly change one card for another (color change move). He also performed for Elizabeth I of England. Then he performed the David Blaine trick. One card held tightly by Elizabeth changed places with the card that Scotto held!
Tarot decks were NOT widely used or printed. Some fortunetellers (gypsies) did exploit the deck. But by the late 1500's the hand painted tarot deck was a rarity and only for the very wealthy.
Other tricks that were regularly featured included the production of livestock, usually birds, sometimes a small pig or dog. The production of coins and eggs (eggs were valuable during the time) was a standard routine. Note, while the Misers Dream gained popularity with Downs at the turn of the 20th Century, it had been performed in some form since Roman times (and probably earlier!). Everyone likes the magical appearance of money!
By the end of the 1600's the “Egg Bag” had been invented and was being used by several top magical names of the era.
So what can you do that is historically correct. Any card trick (there are woodcut decks without back designs available), The Linking Rings, Any decapitation (French arm chopper, Disecto, sword through neck, dagger head chest, etc.), the egg bag, most coin tricks, including the Misers Dream, most rope magic especially those tricks using the “grandma's necklace principal, and any livestock production.
Costume is simple. Knickers and tights with period shoes or boots, a white blousy shirt without buttons (ties), and a waistcoat is all that is needed. Toss on a floppy beret or some soft fez looking hat or no hat at all, and you are set!
OK, this was long, but hopefully helpful