how does deathdance work and when do you buy it?
i read the description but most of it came across as a bunch of random numbers, from what i can understand its like a Sustain item for up close melees, if thats the case then why not 
i read the description but most of it came across as a bunch of random numbers, from what i can understand its like a Sustain item for up close melees, if thats the case then why not 
deaths dance a terrible item dont BUY IT
it heals off ALL physical damage, that includes physical damage from abilites and AAs.
It also turns a % of ALL incoming damage (except true damage) into a bleed affect on you over a duration. Basicly reducing incoming damage by a % and replacing it with a bleed.
Its use-fullness depends on the situation.
its actually an interesting item on ad casters since it heals you for 12% of all physical damage dealt, spells included. the bleed effect is kind of like an anti burst thing
Death's Dance also gives heals for spells. I get both on most champions I get DD on though.