Suggested Kalista Change
A bit of information before you read my suggestions. Kalista's base mana is 232 – 827 The suggested change I present is, make Kalista's dashes similar to Kassadin's rift walks. First dash costs 10 mana, the next dash within the next 3 seconds costs double that amount. The dash continues to double until it reaches 640 (7 consecutive dashes.) Dashes beyond that stay at the 640 mana cost. In addition to this nerf to her dash, her rend is now capped at 250 damage vs minions and monsters and now deals the damage over a 2 second bleed. These changes make Kalista's dashes healthy in the sense that she has to think about when she actually needs to dash instead of just spamming them with ridiculous attack speed, and also stop Kalista from securing EVERY objective that she's been auto attacking. The bleed on her rend instead of the instant burst of damage functionally makes sense as they are crippled(slowed) as they bleed but also in a balance sense it makes it so when melee champions do manage to catch up to her they have reaction time to block some of those rended spears, lifesteal/regen some of the health back, or kill Kalista before they are killed by the DoT. This change is in no sense supposed to gut Kalista so as for compensation decrease the cooldown of Pierce from 8 to 8/7/6, the mana cost to 50/55/60/65/70 to 50 at all ranks, decrease the mana cost of Fate's Call to 50 from 100. With the lowered mana costs on her other abilities she should still be able to manage her mana costs effectivley with the changes to her Martial Poise passive.