Wall of Blossoms

Defender
When Wall of Blossoms enters, draw a card.

Gruul Guildgate

This land enters tapped.
{T}: Add {R} or {G}.

Boros Guildgate

This land enters tapped.
{T}: Add {R} or {W}.

Wall of Omens

Defender
When Wall of Omens enters, draw a card.

Basilica Guards

Defender
Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)

Vent Sentinel

Defender
{1}{R}, {T}: Vent Sentinel deals damage to target player or planeswalker equal to the number of creatures you control with defender.

Axebane Guardian

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

Selesnya Guildgate

This land enters tapped.
{T}: Add {G} or {W}.

Wall of Mulch

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

Wall of Hope

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

Battle Rampart

Defender
{T}: Target creature gains haste until end of turn.

Wall of Fire

Defender (This creature can't attack.)
{R}: Wall of Fire gets +1/+0 until end of turn.

Plains

Angelic Wall

Defender (This creature can't attack.)
Flying

Forest

Wall of Swords

Gatecreeper Vine

Defender
When Gatecreeper Vine enters, you may search your library for a basic land card or a Gate card, reveal it, put it into your hand, then shuffle.

Mountain

Colossus of Akros

Defender, indestructible
{10}: Monstrosity 10. (If this creature isn't monstrous, put ten +1/+1 counters on it and it becomes monstrous.)
As long as Colossus of Akros is monstrous, it has trample and can attack as though it didn't have defender.