Well....this is insteresting. · 9:07am Aug 29th, 2018
Well After seeing What Lies beneath I can confirm that Cozy is a minor villian spy.
But more interesting the Tree is confirmed sentient and takes Twilight's form as it's avatar. Though very scrystally which further proves a connection between the tree and the Heart.
Not only Twilight. It also pulled up copys of Rarity and Rainbow Dash to interact and two random mares for the tea party.
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But Twilighyt's was clearly different and I think that is it's chosen avatar.
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I'm not sure it's a chosen Avatar. More like one that the students would recognize and respect plus probably the first one it ever generated. Preffered might be a better choice.
Another thing to note
The Tree is far from the school but its tendrils spread far. Or are they the castles tendrils? Could the Avatar we see be the Castles rather that the actual Tree's?
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they said tree. and again Twilight's form was different form the others and considerign how dominat Twilight's mark is on the tree I saw it is chosen.