Must Ruin Runner be killed by Cull the Weak if it is the only unit?
If the only unit on my opponent's field is Ruin Runner, will they be forced to kill it when Cull the Weak resolves?

I can't be chosen by enemy spells and abilities.
Artist: Grafit Studio
Card Set: Spiritforged
If the only unit on my opponent's field is Ruin Runner, will they be forced to kill it when Cull the Weak resolves?
Would King's Edict work around Ruin Runner's protection the same way Cull the Weak does?
Ruin Runner cannot be chosen by enemy abilities and spells. How does that interact with Ruination, Cull the Weak, legend abilities, and Elder Dragon? Can Elder Dragon choose Ruin Runner initially, and does later damage still kill it?
Ruin Runner has an ability that cares about targeting restrictions. I want to use The List on it to give it -2 Might. Can The List target Ruin Runner to give it -2 Might?
I know The List can name any tag. If I name Fiora and she is Mighty, do I need to pay Deflect? Also, could I name Ruin Runner directly to avoid targeting it?