We know that Merlin continued to talk to/instruct the Sorcerer’s Apprentice through the cauldron, as we saw that last season. That “Sorcerer” seemed to be a disembodied spirit. Consistent with a wizard who is currently trapped in a tree? Maybe.
Ooh, good point! I wonder … what if the Apprentice was using a toadstool potion to talk to Merlin???
SFG
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Keeper of Anna’s Awkward Babbling and Kristoff’s Fur-trimmed Tunic!