Conversion [Alpha Edition]Set: Alpha Edition Type: Enchantment Rarity: Uncommon Cost: {2}{W}{W} At the beginning of your upkeep, sacrifice Conversion unless you pay {W}{W}. All Mountains are Plains.

Set: Base Set 1st Edition Type: Grass Rarity: Uncommon Retreat cost: Colorless

Set: HeartGold & SoulSilver: Unleashed Type: Water

and any battle damage your opponent takes becomes halved

destroy Zephyr Needle when the combat chain closes

" —Lady Zhurong to her husband Meng Huo

Set: Base Set 2 Type: Lightning Rarity: Holo Rare Retreat cost: Colorless

Set: EX: Team Rocket Returns Type: Darkness Rarity: Holo Rare Retreat cost: Colorless

Set: Black & White: Black Star Promos Type: Lightning Rarity: Black Star Promo Retreat cost: Colorless

Set: XY: Ancient Origins Type: Darkness Rarity: Ultra Rare Retreat cost: Colorless

Set: Base Set 1st Edition Type: Fighting Rarity: Uncommon Retreat cost: Colorless

Set: Black & White: Boundaries Crossed Type: Item Rarity: Rare Ace

If that mana is spent on an instant or sorcery spell