Patch 2.13.4 (22 December 2015 Hotfix)

General balance

 * Creep health packs: heal reduced from 250 to 200.
 * Health pack: heal reduced from 500 to 400.

XP system

 * The amount of xp you get extra or less depending on the level difference between teams has been increased from 3% to 4%. This should keep the levels of teams a bit more equal. (Explanation: normally for a kill you get 40% of the XP the victim has. If the victim is one level higher than you, you get 44%. If the victim is one level lower than you, you get 36%.)
 * Damage increase per level from 4% to 3%.
 * Health increase per level from 5% to 4%.

Ayla

 * Base health increased from 1250 to 1300.

Ted McPain

 * Shotgun damage in combination with Starstorm Statue now scales with the correct amount.

Sentry

 * Blackhole sun damage in combination with Starstorm Statue now scales with the correct amount.