(2015-08-25) Gaining control of a creature doesnt cause you to gain control of any Auras or Equipment attached to it
So proliferating a class enchantment won't usually do anything , and won't level it up even if it somehow has counters on it
Taking a look at the new mechanic ASCEND, which offers you the 'City's Blessing' if you control 10 or more permanents
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And learn the condition grading scale players use: Near Mint, Lightly Played, Moderately Played, Heavily Played, Damaged
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)