Cheapest priced copy (Modern Masters): $0.35 at Card Kingdom, near mint, their price list as of .
Careful Consideration 
Instant · Uncommon · Time Spiral · #52
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.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
3 printings · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Modern Masters | 37 | Uncommon | $0.35 | $0.49 |
| Time Spiral | 52 | Uncommon | $0.35 | $0.79 |
| Time Spiral Remastered | 56 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 19 March 2021If 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.