Animate Wall [Alpha Edition]Set: Alpha Edition Type: Enchantment Aura Rarity: Rare Cost: {W} Enchant Wall Enchanted Wall can attack as though it didn't have defender.

Set: XY: Furious Fists Type: Fighting Rarity: Secret Rare Retreat cost: Colorless

Set: Sun & Moon: Lost Thunder Type: Supporter Rarity: Ultra Rare

Set: Morningtide Type: Sorcery Rarity: Rare Cost: {2}{W} Search your library for an enchantment card

Set: Black & White: Plasma Freeze Type: Lightning Rarity: Promo Retreat cost: 2

If the player does

Set: EX: Hidden Legends Type: Darkness Rarity: Holo Rare Retreat cost: Colorless

Set: Expedition: Base Set Type: Fighting Rarity: Holo Rare Retreat cost: Colorless

Set: Sun & Moon: Guardians Rising Type: Water Rarity: Ultra Rare Retreat cost: Colorless

Set: Commander Anthology Type: Artifact Rarity: Rare Cost: {3} You may activate abilities of creatures you control as though those creatures had haste

Set: Legends Type: Creature — Insect Rarity: Rare Cost: {1}{G}{G} Flying

Titania is literally an aspect of the forest itself

Set: Beta Edition Type: Sorcery Rarity: Rare Cost: {2}{W}{W} Destroy all creatures