Have

Wall of Vines

Defender (This creature can't attack.)
Reach (This creature can block creatures with flying.)

Getting

Bar the Door

Creatures you control get +0/+4 until end of turn.

Wall of Mulch

Defender (This creature can't attack.)
{G}, Sacrifice a Wall: Draw a card.

Flumph

Defender, flying
Whenever Flumph is dealt damage, you and target opponent each draw a card.

Tree of Redemption

Defender
{T}: Exchange your life total with Tree of Redemption's toughness.

Pariah

Enchant creature
All damage that would be dealt to you is dealt to enchanted creature instead.

Crenellated Wall

Defender (This creature can't attack.)
{T}: Target creature gets +0/+4 until end of turn.

Axebane Guardian

Defender
{T}: Add X mana in any combination of colors, where X is the number of creatures you control with defender.

Huatli, the Sun's Heart

Each creature you control assigns combat damage equal to its toughness rather than its power.
−3: You gain life equal to the greatest toughness among creatures you control.

Shifting Wall

Defender (This creature can't attack.)
Shifting Wall enters with X +1/+1 counters on it.

Weathered Sentinels

Defender, vigilance, reach, trample
Weathered Sentinels can attack players who attacked you during their last turn as though it didn't have defender.
Whenever Weathered Sentinels attacks, it gets +3/+3 and gains indestructible until end of turn.

Overgrown Battlement

Defender
{T}: Add {G} for each creature you control with defender.

Wall of Wood

Wall of Essence

Defender (This creature can't attack.)
Whenever Wall of Essence is dealt combat damage, you gain that much life.

Wall of Resistance

Defender (This creature can't attack.)
Flying
At the beginning of each end step, if Wall of Resistance was dealt damage this turn, put a +0/+1 counter on it.

Wall of Ice

Wall of Omens

Defender
When Wall of Omens enters, draw a card.

Shield Sphere

Defender
Whenever Shield Sphere blocks, put a -0/-1 counter on it.

Brave the Sands

Creatures you control have vigilance.
Each creature you control can block an additional creature each combat.

Assault Formation

Each creature you control assigns combat damage equal to its toughness rather than its power.
{G}: Target creature with defender can attack this turn as though it didn't have defender.
{2}{G}: Creatures you control get +0/+1 until end of turn.

Forest

Inviolability

Enchant creature
Prevent all damage that would be dealt to enchanted creature.

Cathedral Membrane

({W/P} can be paid with either {W} or 2 life.)
Defender
When Cathedral Membrane dies during combat, it deals 6 damage to each creature it blocked this combat.

Swords to Plowshares

Exile target creature. Its controller gains life equal to its power.

Plains

Wall of Hope

Defender (This creature can't attack.)
Whenever Wall of Hope is dealt damage, you gain that much life.

Solidarity

Creatures you control get +0/+5 until end of turn.

Builder's Blessing

Untapped creatures you control get +0/+2.

Sunscape Familiar

Defender (This creature can't attack.)
Green spells and blue spells you cast cost {1} less to cast.

Stalwart Shield-Bearers

Defender
Other creatures you control with defender get +0/+2.

Sylvan Caryatid

Defender, hexproof
{T}: Add one mana of any color.

Serra's Blessing

Creatures you control have vigilance. (Attacking doesn't cause them to tap.)

Ageless Sentinels

Defender (This creature can't attack.)
Flying
When Ageless Sentinels blocks, it becomes a Bird Giant, and it loses defender. (It's no longer a Wall. This effect lasts indefinitely.)

Castle

Shimmering Barrier

Defender (This creature can't attack.)
First strike
Cycling {2} ({2}, Discard this card: Draw a card.)

Wall of Glare

Defender (This creature can't attack.)
Wall of Glare can block any number of creatures.