I love Pyke's build diversity.

The HP>AD conversion on his passive opens up lots of doors for build potential.

Any AD item is viable on him, and any tank item (barring Warmogs) can be good on him.

The normal assassin items are good on him, as you'd expect, but there's so much more.

gives him 80 AD and tons of sticking power.

doesn't give much base AD (since his isn't too high), but he gets 32 AD from its health and the shield is one of the only ways for Pyke to seriously tank up.

can be used to briefly increase your R's execution threshold.

gives solid AD, movement speed, and burst.

amps your passive.

is a more defensive version of Mallet.

makes it impossible to outrun you.

It's kinda awesome how much good one line of ability description can do.