Item combo for magical bruisers/tanks in solo q

+ seem to stack, giving atleast +25% magic damage against anyone next to you after you are in combat with champs for 5 seconds...

The reason why I say atleast is because im not sure if they stack multiplicatively or additively.

Yes you are sacrificing a bit of tank stats for damage but this has usually given the best return, atleast for me.

The ravenous hunter rune gives around 14% leaching on abilities when stacked which means you can utilize your base damage even further...and tanky champions tend to use that healing effectively with armor/mr.

even though his R does true damage and isnt buffed by the +25%, it still helps amazingly with your e (which is an aoe %max hp + slow) and helps align cho gath more towards being a juggernaught rather than being a tank with an execute.

can build which gives 100 mr and 700 health...meaning you arnt very likely to need anymore magic resist items...and you cant really build any other damage items on ornn except for unless you really wanna go magic pen.

his e synergizes incredibly well with both items, just like cho gath.

does this champ even currently have any half decent ap scaling? Although he might prefer getting visage over abyssal since he needs the healing, just like maokai/mundo