Conceptually these items seem cool! But currently they seem a bit overtuned
vital burst would prob make playing lane insufferable as unless ur 1 bursting enemy, lane is infinite stalemate, and 15% spirit res on frontliner seems like wayy to much
I think to make vital burst more balanced
1. remove the radius healing
2. make the healing % based (maybe 40-50%)
3. Make it a 1600
4. long cd (like 35-45 seconds)
For frontliner
1. Remove the spirit res entirely
2.make the cd time based instead of getting back up to full hp
3. reduce the healing bonus to 10% (since u are already ignoring healing debuffs)
4. make the group heal lower to something like 5% but increase the radius
The idea seems cool but adding cheap tanky items like this always come with the inherent threat of making the game meta into a healing slug fest XD