Keyword: Defender

Wall of Spears

Defender (This creature can’t attack.)
First strike

Wall of Fire

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

Wall of Water

Defender (This creature can’t attack.)
: Wall of Water gets +1/+0 until end of turn.

Wall of Air

Defender, flying (This creature can’t attack, and it can block creatures with flying.)

Vodalian War Machine

Defender (This creature can’t attack.)
Tap an untapped Merfolk you control: Vodalian War Machine can attack this turn as though it didn’t have defender.
Tap an untapped Merfolk you control: Vodalian War Machine gets +2/+1 until end of turn.
When Vodalian War Machine dies, destroy all Merfolk tapped this turn to pay for its abilities.

Necropolis

Defender (This creature can’t attack.)
Exile a creature card from your graveyard: Put X +0/+1 counters on Necropolis, where X is the exiled card’s converted mana cost.

Wall of Brambles

Defender (This creature can’t attack.)
: Regenerate Wall of Brambles.

Wall of Bone

Defender (This creature can’t attack.)
: Regenerate Wall of Bone. (The next time this creature would be destroyed this turn, it isn’t. Instead tap it, remove all damage from it, and remove it from combat.)

Wall of Fire

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

Living Wall

Defender (This creature can’t attack.)
: Regenerate Living Wall.

Wall of Water

Defender (This creature can’t attack.)
: Wall of Water gets +1/+0 until end of turn.

Wall of Air

Defender, flying (This creature can’t attack, and it can block creatures with flying.)

Wall of Vapor

Defender (This creature can’t attack.)
Prevent all damage that would be dealt to Wall of Vapor by creatures it’s blocking.

Wall of Opposition

Defender (This creature can’t attack.)
: Wall of Opposition gets +1/+0 until end of turn.

Wall of Dust

Defender (This creature can’t attack.)
Whenever Wall of Dust blocks a creature, that creature can’t attack during its controller’s next turn.

Elder Land Wurm

Defender, trample
When Elder Land Wurm blocks, it loses defender.