Wow, I have a similar deck that can create but It could be improved and this is some impressive combos. I just think you have too few lands to do this but your elves can make up for it if you can get them out. Slight weakness but what deck doesn't have one? I would suggest Nissa Revane just because she works well with elves and can also add life. Other than that this doesn't need much changes. The only thing is to see what happens in battle.
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Very nice, I like the archdruid and the Drove. It could use a few more spells and look into well wisher, it can gain a good amount of life as well. The only problem I have is quite a few of the cards do much the same thing and that can be good if you can only get certain cards out but a little variety never hurts.
What is the point of Abyssal Persecutor? You would achieve the same effect with out it.
Unfortunately, you cannot have both planeswalkers on the field at the same time. Only one planeswalker of each type is allowed on the field at one time. Playing Nissa while Garruk is on the field would cause them both to go to the graveyard.