Global replacement effects

[MedeaMelana]

Some non-permanent objects (instants, sorceries, triggered abilities, activated abilities) create replacement effects that are not tied to a specific object and can therefore not be stored in a single object, but rather need to be stored somewhere in the world. In M13 these are:

• Safe Passage: Prevent all damage that would be dealt to you and creatures you control this turn.
• Fog: Prevent all combat damage that would be dealt this turn.