I have seen some death cap posts so i thought i'd add in my own opinion.
The problem i see is that it is hard to get build because of taking up 3 slots with just raw ap and the combine cost just adds in the passive.
I propose changing the recipe to
+
+1265 (for the passive)
By changing a late game item into just two ingredients would help with inventory space as well as lower the overall cost of death cap to 3765 so you can put that extra 35 gold you saved towards a 
now has 180 ap and gives 20% additional ap