Wall of Water

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

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 Fire

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

Wall of Air

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

Living Wall

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

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 Air

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

Wall of Water

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

Living Wall

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

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.

Wall of Brambles

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