Rule #1: Rules Conflicts

When two rules come into direct conflict, use the following order of precedence to determine how to proceed:

1. If one rule (Rule A) references another rule (Rule B) by name, then Rule A takes priority. If this does not resolve the conflict, then move on to step 2 below.
2. Rules that prevent something happening take priority over rules that force something to happen. If this does not resolve the conflict, then move on to step 3 below.
3. If multiple effects happen at the same time:
4. If both Effects belong to the same player, that player determines the order they are resolved.
5. If the Effects belong to different players, the Active Player chooses the order to resolve them.

Example

Kenko uses Slam Attack on Manu.
Manu has the Immovable Trait.
Slam Attack makes no reference to Immovable, & vice versa - so test 1 does not resolve this.
As per test 2, since Immovable is stopping an effect from happening, it takes priority over the Slam rules so Manu is not moved or made Prone.