Change of Plans — ruling 1

If multiple creatures are instructed to connive simultaneously, they connive one at a time in the order of their controller's choice.

Change of Plans — ruling 2

You choose which creatures to phase out after all of those creatures have connived.

Change of Plans — ruling 3

Once an ability that causes a creature to connive begins to resolve, no player may take any other actions until it's done. Notably, opponents can't try to remove the conniving creature after you discard a nonland card but before it receives a counter.

Change of Plans — ruling 4

If no card is discarded, most likely because that player's hand is empty and an effect says they can't draw cards, the conniving creature does not receive a +1/+1 counter.

Change of Plans — ruling 5

If a resolving spell or ability instructs a specific creature to connive but that creature has left the battlefield, the creature still connives. If you discard a nonland card this way, you won't put a +1/+1 counter on anything. Abilities that trigger “when [that creature] connives” will trigger.

Change of Plans : règles, fonctionnement et interactions (MTG)

Change of Plans 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

Each of X target creatures you control connive. You may have any number of them phase out. (To have a creature connive, draw a card, then discard a card. If you discarded a nonland card, put a +1/+1 counter on that creature. Treat phased-out permanents and anything attached to them as though they don't exist until their controller's next turn.)

How it works : Change of Plans

Original English text — Wizards of the Coast / Scryfall

#1April 29, 2022· Wizards of the Coast
If multiple creatures are instructed to connive simultaneously, they connive one at a time in the order of their controller's choice.
No other card is named in this ruling.
#2April 29, 2022· Wizards of the Coast
You choose which creatures to phase out after all of those creatures have connived.
No other card is named in this ruling.
#3April 29, 2022· Wizards of the Coast
Once an ability that causes a creature to connive begins to resolve, no player may take any other actions until it's done. Notably, opponents can't try to remove the conniving creature after you discard a nonland card but before it receives a counter.
No other card is named in this ruling.
#4April 29, 2022· Wizards of the Coast
If no card is discarded, most likely because that player's hand is empty and an effect says they can't draw cards, the conniving creature does not receive a +1/+1 counter.
No other card is named in this ruling.
#5April 29, 2022· Wizards of the Coast
If a resolving spell or ability instructs a specific creature to connive but that creature has left the battlefield, the creature still connives. If you discard a nonland card this way, you won't put a +1/+1 counter on anything. Abilities that trigger “when [that creature] connives” will trigger.
No other card is named in this ruling.