Every change in Dota 2 patch 7.33d, straight from Valve's official notes: 45 heroes, 4 items and 0 neutral items changed. Hero and item names link to their current stats.
Mana Gain decreased from 16/18/20/22% to 14/16/18/20%
Mana Shield
Illusions now have reduced damage absorption per mana: 1/1.4/1.8/2.2/2.6 instead of 2/2.4/2.8/3.2/3.6. Illusions gain +0.7 damage per mana from level 25 talent instead of +1.3. Damage absorption on the main hero is unchanged
Stone Gaze
Stone Duration decreased from 2.4s to 2/2.2/2.4s
Talents
Level 20 Talent Stone Gaze Duration decreased from +2s to +1.5s