Keyword: Reach

Spitting Gourna

Reach (This creature can block creatures with flying.)
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Silklash Spider

Reach
: Silklash Spider deals X damage to each creature with flying.

Seton’s Scout

Reach (This creature can block creatures with flying.)
Threshold — Seton’s Scout gets +2/+2 as long as seven or more cards are in your graveyard.

Anurid Swarmsnapper

Reach (This creature can block creatures with flying.)
: Anurid Swarmsnapper can block an additional creature this turn.

Seton’s Scout

Reach (This creature can block creatures with flying.)
Threshold — Seton’s Scout gets +2/+2 as long as seven or more cards are in your graveyard.

Woolly Spider

Reach (This creature can block creatures with flying.)
Whenever Woolly Spider blocks a creature with flying, Woolly Spider gets +0/+2 until end of turn.

Krosan Archer

Reach (This creature can block creatures with flying.)
, Discard a card: Krosan Archer gets +0/+2 until end of turn.

Skyshooter

Reach (This creature can block creatures with flying.)
, Sacrifice Skyshooter: Destroy target attacking or blocking creature with flying.

Canopy Spider

Reach (This creature can block creatures with flying.)

Longbow Archer

First strike; reach (This creature can block creatures with flying.)

Ancient Spider

First strike; reach (This creature can block creatures with flying.)

Pincer Spider

Kicker (You may pay an additional as you cast this spell.)
Reach (This creature can block creatures with flying.)
If Pincer Spider was kicked, it enters the battlefield with a +1/+1 counter on it.

Woolly Spider

Reach (This creature can block creatures with flying.)
Whenever Woolly Spider blocks a creature with flying, Woolly Spider gets +0/+2 until end of turn.

Plated Spider

Reach (This creature can block creatures with flying.)

Spitting Spider

Reach (This creature can block creatures with flying.)
Sacrifice a land: Spitting Spider deals 1 damage to each creature with flying.

Longbow Archer

First strike; reach (This creature can block creatures with flying.)

Plated Spider

Reach (This creature can block creatures with flying.)

Giant Spider

Reach (This creature can block creatures with flying.)

Longbow Archer

First strike; reach (This creature can block creatures with flying.)

Canopy Spider

Reach (This creature can block creatures with flying.)

Giant Spider

Reach (This creature can block creatures with flying.)

Woolly Spider

Reach (This creature can block creatures with flying.)
Whenever Woolly Spider blocks a creature with flying, Woolly Spider gets +0/+2 until end of turn.