What happens if you dropped 3 'insert stupidly strong pill possibly containing other things here'?
You might think you can handle that dose of MDMA being you may have had one or two before, but when taken all at once who knows what the extra little bits and peices will do to you. Pills containing other things that might only become dangerous when more than one is taken, caffine or other adulterants for example.
If your seriously considering tripple dropping I think its seriously time to take a break and look at your usage.