Make your own keystone!
Honestly, at this point, Riot has given up with trying to balance the keystones. Instead of nerfing the crap out of the one good offensive keystone, I feel like they should replace or buff keystones currently in place, to add more to the playstyle diversity you want and play customization in general. So use this thread to make your own keystone/propose buffs for others!
Keystone 1 (Utility Tree)- Goddess's Protection: When you suffer damage that takes away more than 30% of your health within 2 seconds, you gain .5x your current resistances and 40% movement speed (rapidly decaying) for 3.5 seconds. (45 second cooldown) Synergies: Semi-Squishy fighters-- such as Elise, Riven, etc Keystone 2 (Defensive Tree)- Void Vortex: When near enemy champion(s)[300 units], you quickly gain stacks depending on how many champions are in the range and how close they are. At 25 stacks, a vortex slowly begins to form at 100 units surrounding you, slowing enemies by 15%. At 50 stacks, the vortex expands to 125 units and slows enemies by 35%. At 75 stacks, the vortex slows enemies by 40%. At 100 stacks, the vortex expands to 200 units for 2 seconds, slowing enemies by 55%, and then erupting, pulling all enemies within the 200 units towards you. (think Diana's E.) If all champions move out of the 300 units, stacks rapidly decay. (1 minute cooldown) Synergies: Damage soaking and playmaking tanks, such as Maokai or even Garen(spin to win!). Keystone 3(Utility Tree)- Shepard's Blessing(lol): After a successful ability cast on a champion, your next 3 autoattack's on the same champion cause stacks called "Baaaaahd things". Upon the third stack, the enemy champion hit is morphed into a sheep and is unable to cast abilities and has reduced movement speed for 1.75 seconds. (1 minute cooldown) Synergies: Utility supports-- such as Thresh, Lulu, etc. Keystone 4(Utility Tree)- RITO PLEASE: Every autoattack gives you 1 RP. Synergy: devourer kogmaw.
Have fun!