Name:Mishra's Factory
ManaCost:no cost
Types:Land
A:AB$ Mana | Cost$ T | Produced$ C | SpellDescription$ Add {C} to your mana pool.
A:AB$ Animate | Cost$ 1 | Defined$ Self | Power$ 2 | Toughness$ 2 | Types$ Artifact,Creature,Assembly-Worker | RemoveCreatureTypes$ True | SpellDescription$ CARDNAME becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
A:AB$ Pump | Cost$ T | ValidTgts$ Creature.Assembly-Worker | TgtPrompt$ Select target Assembly-Worker creature | NumAtt$ +1 | NumDef$ +1 | SpellDescription$ Target Assembly-Worker creature gets +1/+1 until end of turn.
SVar:Picture:http://www.wizards.com/global/images/magic/general/mishras_factory.jpg
Oracle:{T}: Add {C} to your mana pool.\n{1}: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.\n{T}: Target Assembly-Worker creature gets +1/+1 until end of turn.