Running Triggers on Slave with Row-based Events in MySQL >=5.6
Perhaps instead, you require a Stored Procedure on your slave that you can run from a cron job mysql  -e "call sp_udfs" to do the processing across the tables to alter that data. Events disable by default in a slave You could do a lot of work with that approach. This way you can control its behaviour much better than triggers. Other benefit, you can run any form of replication you wish, row, statement or mixed