This is a discussion on Open ender + flush draw after flop within the online poker forums, in the Tournament Poker section; What to do in the befinning od the tournament if you have this situation after flop? Open ender + flush draw
I would agree with mentioned Points of raising if no one else raised before and calling if someone raised before.
BUT - what if the raise before you is incredibly high? Speaking of 3/4 of pot, potsize and above? Basically an oversized bet? Would you still call or even 3bet with this draws? Personally...I wouldn't.
I think I would play aggressive but very attentive, since we do not know the rivals yet, play aggressive but cautious, so if you league you will start the tournament well. in case this is not the case, you will not lose much of your stack