Untimely Malfunction
Redirection is the rarer and stranger of the three modes here, and it's the reason this belongs in a conversation about interactive red. Changing the target of a spell or ability with a single target is defensive misdirection: point an opponent's burn back at its caster, save your own creature from a targeted kill, or bend a "destroy target permanent" trigger onto something you'd rather lose. Red has carried a thread of this trick going back to Deflection and its descendants, but folding it into a modal instant means the card always has a line to take. If nothing needs redirecting, it destroys an artifact; if the board is what matters, one or two creatures can't block, which turns a stalled ground into an alpha strike or clears a blocker off your would-be-lethal attacker. That combat line is the one doing quiet aggressive work: an evasion enabler priced to fit a curve that wants to be attacking anyway. Each of the three choices answers a different axis (artifacts, the stack, combat), so the card slots into whatever hole the game hands you rather than committing you to a plan on the draw step. It's a modal utility instant built for a color that historically had to main-deck its answers or go without.
