Reki, the History of Kamigawa [Mystery Booster] Mirrodin Promos Assembly Worker still counts as

Assembly Worker still counts as a land but cannot be tapped for mana the turn it comes into play

{2}{U}{U}: Return Palinchron to its owner's hand

and planeswalker spells that player casts cost {2} less to cast

Set: Commander's Arsenal Type: Enchantment Rarity: Common Cost: {2}{U} Whenever an opponent casts a spell

Set: International Collectors' Edition Type: Instant Rarity: Rare Cost: {U} Change the text of target spell or permanent by replacing all instances of one basic land type with another

Reki, the History of Kamigawa [Mystery Booster] Mirrodin Promos Assembly Worker still counts asSet: Mystery Booster Type: Legendary Creature Human Shaman Rarity: Rare Cost: {2}{G} Whenever you cast a legendary spell, draw a card. "After his death, monks spent ten years transcribing the tattoos from Reki's body and gathering stories from those who spoke with him. Thus the volume you hold was written." *The History of Kamigawa*