What if Rylai's worked a little bit differently?
Occasionally I see people upset about Rylai's being too strong, so I figured I'd throw out a random idea for changing how it worked (though I'm sure it's been proposed before);
Let's say it works on a charge system similar to Statikk Shiv or Deadman's Plate. While moving, casting, or attacking you gain charges. When you reach 100 stacks your damaging abilities slow targets for a few seconds.
Too weak? Increase the stack rate, duration, or slow amount. Too strong? Decrease them.
Too prevalent on fast casting champions (like Eve vs. Veigar)? Higher stack gain for higher mana costs.
No need to mess with the AP/HP stats.
