Fervor stacks attack speed with each hit, so keep attacking the same target in fights.

Switch to melee form for bash and bonus armor, use it when fighting or tanking Roshan.

Use ranged form to farm and harass safely, then switch to melee to fight.

Battle Trance gives massive lifesteal and attack speed, so pop it to win a duel or siege.

Troll is one of the fastest Roshan killers, so take Aegis early to snowball.

Build BKB before fights so you do not get kited or disabled while attacking.