If you're running Leia, Ig-88 and some card draw (Scomp, Planning, etc.) and you get Blaze of Glory off twice in a round, do you take 3 damage at the end of the round or 6?

Blaze of Glory: "At the end of the round, you suffer 3 [dmg]"

Justification for 3:

"end of round" is a single timing instance and by taking 3 damage you are satisfying the condition on both copies of Blaze of Glory.

Justification for 6:

You played it twice, the end of round effect should happen twice.

They are two different sources for Blaze of Glory. You resolve the effects of each one separately.