Rapid Fire — ruling 1

If a turn has multiple combat phases, Rapid Fire can only be cast before the beginning of the Declare Blockers Step of the first combat phase in that turn.

Rapid Fire : règles, fonctionnement et interactions (MTG)

Rapid Fire is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Cast this spell only before blockers are declared. Target creature gains first strike until end of turn. If it doesn't have rampage, that creature gains rampage 2 until end of turn. (Whenever the creature becomes blocked, it gets +2/+2 until end of turn for each creature blocking it beyond the first.)

How it works : Rapid Fire

Original English text — Wizards of the Coast / Scryfall

#1September 20, 2013· Wizards of the Coast
If a turn has multiple combat phases, Rapid Fire can only be cast before the beginning of the Declare Blockers Step of the first combat phase in that turn.
No other card is named in this ruling.