Wall of Stone [30th Anniversary Edition] Water Seven Set: Champion Pack 2 Card

Set: Champion Pack 2 Card type: Normal Spell Rarity: Super Rare Attack: 0 Defense: 0 Destroy 1 face-up monster with the highest DEF on your opponent's side of the field

or the first Otter spell other than Alania you've cast this turn

Set: XY: Generations Type: Psychic Rarity: Holo Rare Retreat cost: 0

There was a mage who sought to remedy it

Wall of Stone [30th Anniversary Edition] Water Seven Set: Champion Pack 2 CardSet: 30th Anniversary Edition Type: Creature Wall Rarity: Uncommon Cost: {1}{R}{R} Defender (This creature can't attack.) The Earth herself lends her strength to these walls of living stone, which possess the stability of ancient mountains. These mighty bulwarks thwart ground based troops, providing welcome relief for weary warriors who defend the land.