your best option would be to use steemauto.com like @geekgirl suggested. it gives you the opportunity to customize the experience a bit more than most of the bots out here.
I recently learned about it from a group I joined called @accra.
btw what are the conditions you are looking to have met by the bot?
Congratulations! Your submission earned you 0.013 STEEM from this bounty. You have received 0.000 STEEM from the creator of the bounty and 0.013 STEEM from the community!