Also, other playstyles can have synergy.

Using special arrows you can create any kind of synergy a mage can internally.

Knockdown arrow/crushing fist/battering ram/crippling strike + bully is self-created 'synergy' but in a different way.

Venomous Strike + fire enchanted weapon auto-attack = explosion

Hit a zombie then phoenix dive = explosion

Scoundrel exploskeleton + poison = explosion (using this one quite a lot at the moment)

Also does bleeding + air damage stun?