Careful Consideration — ruling 1

If a spell or ability copies Careful Consideration, the target player discards three cards for the copy after drawing four cards. This is because the copy wasn't cast at all.

Careful Consideration : règles, fonctionnement et interactions (MTG)

Careful Consideration 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

Target player draws four cards, then discards three cards. If you cast this spell during your main phase, instead that player draws four cards, then discards two cards.

How it works : Careful Consideration

Original English text — Wizards of the Coast / Scryfall

#1March 19, 2021· Wizards of the Coast
If a spell or ability copies Careful Consideration, the target player discards three cards for the copy after drawing four cards. This is because the copy wasn't cast at all.
No other card is named in this ruling.