Survive the Night

The oldest liability of the combat trick is the dead turn: mana held up, the fight never came, and the card rots in hand as a tempo loss. Stapling investigate to a protection spell softens that risk without erasing it. Grant a creature indestructible to blank a removal spell or win a one-sided block, and the Clue rides along as a deferred card; even a routine, uncontested cast still banks an artifact, so the mana rarely buys nothing. The +1/+0 is the quieter half, but it does real combat math, turning a trade into a kill or shoving an attacker past a blocker it would otherwise bounce off. The catch is targeting. This is a spell that demands a legal creature on cast, and the same window that lets you protect one creature lets your opponent respond to your protection. Point it at a creature they then remove in response and the whole thing fizzles for want of a target: no indestructible, no +1/+0, and crucially no Clue, since investigate is written into the spell rather than a separate trigger that survives a countered resolution. That is the real seam. The insurance is generous but conditional, and a well-timed removal spell strands both halves at once. The card's design bet is that resolutions vastly outnumber the fizzles, and that a Clue banked on every clean cast is worth more, over a game, than the occasional turn where the trick and its consolation prize both go up in smoke together.