What it does
Summary Execution isn't a standard Magic keyword—it's not an evergreen or mechanical ability found in the comprehensive rules. You may be thinking of a custom card, an Un-set joke, or confusing it with similar-sounding effects.
The closest real mechanics are removal spells with execution-style flavor, like "destroy target creature" effects, edict effects (where a player sacrifices a creature, as with Diabolic Edict or Geth's Verdict), or "exile target creature" removal. If you saw "Summary Execution" on a card, double-check the exact name and Oracle text via Gatherer or Scryfall, since flavorful card names often differ from their actual rules text.
If this is from a homebrew or proxy card on Mythicwyrm, ask the card's creator for its intended rules text, as it carries no official Comprehensive Rules definition.
Iconic cards with Summary Execution
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