Common Guide for Intelligence Hero
Alternative Item : 
1. Mekansm
Get this item as soon as possible and your friend will thanks to you. 250hp aoe heal will save your life many times. Aoe regen is good for push, armor bonus also make you a lil tank.
2. Guinsoo Vise of Scythe
Hex is a superb magic, disable you for 4 secs, alos disable enemy’s special ability like miss chance, reduce magic immunity to 0. Get this on Rhasta & Lion and you’ll heck your enemy easier.
3. EoS
Make your hero tank and boost your mana to spam magic often. Most intel need this
4. Shiva’s Guard
Get this to Lich. Arctic blast deals 200 damage to aoe, combine with chain frost and frost nova, massive damage. 
5. Orchid Of Mangleovance
Soul Burn = Silence + Amplify Damage. Really hurts if combine with DPS like Silencer, Harbinger, and any hero that have attack modifier.
6. BoT
You don’t need ASPD so get this to prevent waste your 135 gold every time back into base.
7 Aghanim Scepter/Refresher Orb
Get this to Lich, Zeus, and any other hero that have aoe disable/killer.
what is dps???? im noob