Execution damage shouldn't make your HP go from 100%-40%
....Lookin at you Veigar
....Lookin at you Veigar
So FYI Veigar's "Execution" damage does not kick in at 100% (nether does anyone's for that matter)
Yeah it still has a base damage. On an infinitely scaling champion expect him to hit hard the longer games go especially if he is fed.