Machine God's Effigy

If Machine God’s Effigy copies a land with a basic land type that has become a creature due to an effect, it will not have any mana abilities that land had due to its land types (it will have the one it gives itself, though). For example, if a basic Forest became a creature due to some effect, and Machine God’s Effigy entered the battlefield as a copy of it, it would be a basic artifact named Forest and have “{T}: Add {U},” but not the intrinsic ability “{T}: Add {G}.”

If Machine God’s Effigy copies a planeswalker that became a creature due to an effect, Machine God’s Effigy will have that planeswalker’s loyalty abilities but its only card type is artifact (it will still be legendary in most cases). Because it isn’t a planeswalker itself, it won’t enter the battlefield with any loyalty counters, but it also won’t die because due to not having any. Similarly, it can’t be attacked and damage can’t be dealt to it. You may activate only one loyalty ability of that permanent per turn. If it later becomes a creature and damage is dealt to it, that damage won’t remove any loyalty counters.

If Machine God’s Effigy somehow enters the battlefield at the same time as another creature, it can’t become a copy of that creature. You may choose only a creature that’s already on the battlefield.