HoN 0.3 patch quick look gameplay changes summary
Just the important stuff:
Pollywog Priest remake: see here
Nullstone massive buff (Costs 500 less, +50% mana regen, +10 damage)
A ward of sight gives 50 gold bounty, so counter-warding is much more beneficial
Nerfed a lot: Blacksmith, Chronos, Deadwood, Demented Shaman, Zephyr
Buffed up a lot: Glacius, Maliken, Night Hound, Thunderbringer, Valkyrie, Voodoo Jester
Other notable changes:
Legionnaire gains a charging ability in place of the never-used Terrify ability
Slither wards give 108% more bounty when you kill them
Keeper of the Forest’s eyes now invisible to other team till they are near them
Ophelia’s creeps don’t get magic armor anymore
Valkyrie’s javelin doesn’t make noise when cast and is much harder to see (making it much harder to anticipate and dodge)
Check out the full changelog here