Reach allows a creature to block creatures with flying despite not necessarily having flying itself. Reach decks can use high-toughness ground creatures to control both terrestrial and aerial combat.
Spiders receive reach especially frequently, with cards such as Arachnogenesis producing a sudden defensive web of blockers. Silklash Spider combines reach with repeatable anti-flying removal, while Thornweald Archer pairs reach with deathtouch. Spiders like Deadly Recluse show how the ability often turns otherwise modest creatures into reliable defensive roadblocks.
