Design a automated bot to buy and sell through a game

For the game Magic the Gathering Online (MTGO), I need a bot designed to buy and sell through its trading interface. The bot need: Have buy and sell functionality (generally through recognizing in chat the word Buy or Sell) Paste messages at the beginning of trading Be able to buy and sell various product at specific prices The bot needs to interface with a price-list of thousands of cards that we will provide the address to (Preferably through an excel file) To be able to keep a history on all transactions processed. To keep a running balance for the various usernames that trade with (Game trades in units of 1 but many trades will involve decibels so there will be some carry over balance) Note: There may be a need for a slight update 3-6 month due to the game's changing nature, so I do plan on continuing my business with whomever I do business with. Contact me here for any information The game's site can be found on [login to view URL]