What it does
Temporal Foresight isn't a real Magic: The Gathering keyword or ability—it doesn't appear on any official card or in the comprehensive rules. It sounds plausible because Magic has plenty of "Temporal" cards (Temporal Manipulation, Temporal Mastery, Temporal Aperture) and foresight-style effects, but no mechanic by this name exists.
If you encountered this on a card or in a discussion, it's likely a custom/homebrew design, a misremembered name, or possibly a Mythicwyrm-specific custom mechanic outside official rules. Real effects that match the "see the future" vibe include scry (look at and reorder top cards), surveil (look, then keep or bin), and explore.
For an accurate explanation, double-check the exact card name or text. If it's a custom card from your playgroup or platform, the rules would be defined by whoever created it, not by Wizards of the Coast.
Iconic cards with Temporal Foresight
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