Agility

Hand it to any creature and the opponent's blocking math collapses. The +1/+1 is almost an afterthought; the real payload is the grafted flanking, which punishes any non-flanking blocker with a -1/-1 the moment that blocker is declared. An opponent who would happily trade a 2/2 for your enchanted 2/2-turned-3/3 now sees their blocker shrink to a 1/1 before damage is ever assigned, often dying for nothing while your creature walks away whole. The timing is the whole trick: because the trigger fires on the declaration of blockers rather than on combat damage, the penalty resolves first, so the weakened blocker is already smaller by the time the two creatures actually swing. This was the engine Mirage used to make attackers structurally better than blockers without raising the printed power level of the creature itself, and the Aura distills that intent into two mana. It sits among a handful of flanking-granters from the same era, the ones that let a deck commit to the keyword rather than rely on whichever creatures happened to print with it. The cost is the standard tax on any creature-buffing Aura: a single removal spell aimed at the enchanted creature cashes two of your cards for one. What you buy in return is a combat advantage that bends every blocking decision in your favor for as long as it stays on the table.