Fun fact Face of the moution is the most effective HP stacking item in the game late game.

The item that gives most hp is at 800 hp.

Using gives 450 hp so at 3.5k hp you get a 350 hp shield from it meaning you get the same effective hp at 800 hp and any HP gained from any items from that point gives an extra 10 hp on the shield. Keep in mind shields are also not affected by max hp percentage damage. Meaning it is better then warmong's armor against any team with max health percent damage and it also gives an ally an equal amount of hp.

Cinderhulk only gives 400 hp flat then another 150 per 1k bonus hp meaning a (3000 bonus hp) 5000 hp it would give 850 hp total. Well face of the mountion gives 950 total hp effectively