Caster (offensive)

Heroes

Iah – excellent at pushing towers and has a powerful CC in her Quickpit (W).



Trixie – has two CC moves and does a lot of sustained magic damage in a fight. Her ult is a massive disable which also reduces enemy Resistance and combines well with other AoE ults such as Bastion's, Hale's, Iah's, Claudessa's, and Fetterstone's.



Malady – master of CC: a stun, a slow, and her very unique wall. Usually played as an assassin, but she can be a support as well.



Vex – excellent at split pushing and can countergank once he gets his ultimate.



Bandit.0 – great at pushing and can potentially stunlock enemies if he gets lucky.



Ray – well rounded with a stun, a slow, and great wave clear.



Chester – excellent wave clear and harass. His abilities help allies such as Hale secure kills.



Jin She – melts through enemy Resistance and has a powerful skillshot stun. Excellent wave clear.



Bastion – massive AoE magic damage and a great initiating stun. His shield helps buff brawler waves to take down towers.



Bo – great initiator, although not the best at pushing waves. More teamfight oriented.

Items

Hexbane of Restraint – 1x Power Crystal, 1x Power Relic OR 1x Health Crystal, 1x Power Relic. Core on every support. This particular craft is good for dealing extra damage.



Cursed Wand of Ruin – 1x Clarity Shard, 1x Power Crystal OR 1x Mana Shard, 1x Power Crystal OR 1x Power Shard, 1x Health Crystal. Core on every offensive support. This craft is good for extra damage as well.



Diadem of Blood or Mastery – 1x Mana Stone, 1x Mana Crystal. Adds power and mana. The Blood enchantment is good for survivability, while Mastery is good for extra damage.



Windrush of Diligence – combination of Clarity Shards, Mana Shards, or Power Shards. This helps your allies push and rotate and gets them out in a pinch.



Arcane Emblem of Heritage – combination of Clarity Shards, Mana Shards, or Power Shards. Adds lots of extra damage and Heritage feeds well into Diadem, plus it's one of the best enchantments in the game due to how gold efficient it is.



Runed Scepter of Empowerment – combination of Clarity Shards, Mana Shards, or Power Shards. Empowerment will add a lot of damage and the cooldown reduction will help you push faster.



Everwinter Charm of Restraint – combination of power and HP. Good for melee supports, this is a massive CC and it adds a little survivability as well.



Giant's Visage of Might – 2x Health Crystals. Also good for melee supports, adds a lot of power and survivability. Works well with Diadem of Blood.



Power Boots – cheap power and Resistance penetration. If you picked up Runed Scepter this should probably be your boot choice.



Rune Boots – cooldown reduction and regen to help you push. If you didn't pick up Runed Scepter, or you are finding that you are constantly out of mana, this should probably be your boot choice.

Pets

Mystik – adds magic damage and lets you harass better in the laning phase. In a pinch the extra mana can turn the tide of battle.



Plunder – top notch for pushing towers. Adds some survivability too.



Topps – adds another CC to your arsenal. Good for melee heroes, but situational.

Playstyle

The goal of an offensive support caster is to help your allies to get kills and to push lanes so your team can farm the jungle safely. You should focus on spells and items which have CC, and you should build a little more power than a defensive caster.Although any hero in this guide can play as an offensive support caster, the following are particularly good at it.Max your CC abilities first. These will help your allies get kills and they're just generally useful.During the laning phase, your goal is to push the enemy out of lane to prevent them from farming and to give your laning partner room to take jungle camps to increase their GPM. Focus on last hitting so your laning partner doesn't have to put themselves in danger.In the mid and late game, follow your allies around so you can rotate to take objectives. When a fight starts, find the enemy carries and disable them.