Read moreThe Elder Spell is a projectile (or at least interacts with the Windwall tech which Braum E uses like a projectile), so it can be intercepted and deal the effect to Braum instead. The effect is 'die' - technically it's 'lose all shields and take 100% current HP damage*', but that's pretty much the same thing.
* also checks for a few buffs you may have, but you had none of those in this clip
Considering the inconsistent interactions of Urgot's R and the Elder Spell (Urgot chains no longer attach to Braum when he intercepts them since 1 patch after the VGU release), I don't know which set of interactions would be the intended one - to die of Elder but not Urgot, to save from both or to die to both? u/Rovient is responsible for the Elder Dragon shenanigans, so perhaps he could comment on that.
For those curious, here's the initial patch interaction for Urgot R vs Braum...
This is a really tricky one. Part of me thinks this is really unfair for braum, since he's essentially sacrificing himself to save a teammate. But on the other hand that sacrifice could be game winning if he protected the ADC long enough for her to cleanup. I'm not talking about this clip, but in general. Tricky to know the correct path on this one.
Edit: got the answer on this: Braum should not intercept the execute attack.