How to spawn a friendly actor with set?
Something like
<dict name="3">
<string name="desc">Summon 1 skeleton when casting a skill.</string>
<dict name="modifier">
<string name="class">Modifiers::TriggerEffect</string>
<string name="trigger">castspell</string>
<bool name="target-self">true</bool>
<float name="chance">1</float>
<int name="timeout">2000</int>

<array name="effects">
<dict>
<string name="class">SummonAllie</string>
...