Heh sry Grundy turns out i was wrong HOWEVER i have found a way to "null" hp regen i think but it will look weird
the trigger is like this
E: Every 1 second
C:
A: Set life of Paladin <000 gen> life of paladin <000 gen>-(str of paladin <000 gen> x 0.05)
This will result in a fluctuating number like this...
643, 644,(about half a millisecond) 643
I will try to improve
its a bit buggy, resulting in a 1 hp loss every 20 str or so it will be like 1450, 1448, 1449, 1450, etc. so its really messed up make sure to set the regen rate as 0