Rule 614.1 · Replacement Effects
Some continuous effects are replacement effects. Like prevention effects (see rule 615), replacement effects apply continuously as events happen—they aren’t locked in ahead of time. Such effects watch for a particular event that would happen and completely or partially replace that event with a different event. They act like “shields” around whatever they’re affecting.
Subrules
Effects that use the word “instead” are replacement effects. Most replacement effects use the word “instead” to indicate what events will be replaced with other events.
Effects that use the word “skip” are replacement effects. These replacement effects use the word “skip” to indicate what events, steps, phases, or turns will be replaced with nothing.
Effects that read “[This permanent] enters with . . . ,” “As [this permanent] enters . . . ,” or “[This permanent] enters as . . . “ are replacement effects.
Continuous effects that read “[This permanent] enters . . .” or “[Objects] enter [the battlefield] . . .” are replacement effects.
Effects that read “As [this permanent] is turned face up . . . ,” are replacement effects.