you destroy their monster, a spell or trap, and then draw an additional card when Mathematician dies
Customers will receive an email after delivery to Beckett, invoicing, verification (once all cards have been verified), after grading, and after shipping
Everything you need to get started is included.
If you are willing to give up the fifth through eighth best cyclers in your deck for slightly better existing removal options, Jim Davis had a nice-looking Jeskai list last week that I would start with
Set: Ascended Heroes Rarity: Secret Rare Collector's Number: 295 Illustrator: aky CG Works Pokmon 3rd Floor, 2 Central Plaza, Dame Street NE Suite 1600 Dublin, Irland, D02 T0X4
is a great example, though that comparison might not be fair given the rarity and price difference between the cards