Swain's ult sucks for being his only "survival" tool.
Swain's ult sucks. No mater what items you get, Or how you use your abilities, you will die every time you use this ult. It is not threatening at all. Does grossly low damage and healing and it just motivates the enemy mid laner i am against to dive on to me and prove that my ult sucks. I die miserably every time I ult. Soul fragments need a passive effect in addition to the damage from ult. Because the damage from 5 soul fragments on an ult is less than ALL mages except Zyra who is more of a support but can still be a mage.
Swain has to do extra things just to do a little less damage then the average mage ability. Death's hand needs to be far more rewarding to hit a player with all five bolts. I cannot tell the difference between getting hit with 5 bolts or getting hit with xerath's Q which does more damage and is far safer to use. The overtime healing and damage should also increase with more soul fragments because it should be more rewarding to collect those things and might actually force enemies to get better at dodging to deny him soul fragments. It would also be cool If Q did more damage the more soul fragments you had stored at that time. Not to much though Just enough to match the work that it takes to get all 5 lightning bolts into someones face in addition to collecting those soul fragments.