Warlock/Counters

Bad against...

 * Weaver's allows him to escape from Warlock's  with maximum move speed
 * His ultimate allows him to ignore damage from Warlock's golem and escape.


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Others

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Items

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Good against...

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Others

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Works well with...

 * Reason


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 * Sven's works well with Warlock's upheaval
 * allows Warlock's golem to catch up to enemies and better survive against physical damage.


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Others

 * Alchemist (Aghanim Scepter Synth)
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List of heroes that counter Warlock, and list of heroes that work well with Warlock.