Tryndamere can die during his ult
Tryndamere can die during his ult if he Ulted right after coming back to life from Guardian Angel
Today i bought GA as tryndamere and got popped in teamfight really fast; I was spamming R while i was resurrecting, so i wouldnt die before clicking ult.
I died after 1 second, but my ult went on cooldown.
It happened only once but i was in situation like this only once :D