Illusionist's Gambit

The casting window is the entire engine: this can only be cast during the declare blockers step on an opponent's turn, the moment after attackers are committed and the active player has locked in their targets and bodies. From the seat across the table, that timing is everything. You wait until the swing is irrevocable, then yank every attacker out of combat, untap them, hand the table an additional combat phase, and conscript those creatures into a forced melee where they cannot touch you or your planeswalkers. The result is a Fog that bites back: it redirects an alpha strike rather than absorbing it. The attackers must swing again into whatever remains, another opponent's blockers or another opponent's face, a board they never meant to fight. That is why this reads as multiplayer-table tech rather than a generic defensive trick. Because you can cast it during any opponent's declare blockers step, even one whose attack is aimed across the pod, you can hold up the instant on a swing pointed at someone else, untap and reroute those creatures, and convert one player's offense into another player's emergency. It needs a board with multiple viable targets for the forced second attack to find teeth; in a one-on-one game with nobody to absorb the redirect, it still blanks the attack, but functions as little more than a Fog with an awkward untap. Part of its value is psychological: once a table knows it might be live, the cost of committing to an attack climbs for everyone, and an effect that turns an attacker's commitment into a liability quietly reshapes how the whole pod chooses to swing.