Through the Faerie Mirror

Path — Whenever a nontoken creature enters
the battlefield under an opponent's control, put
a quest counter on Through the Faerie Mirror.
Then, if it has four or more quest counters on it, sacrifice Through the Faerie Mirror and create a
token copy of target creature with converted
mana cost 4 or less, except it's a Reflection.
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To wade into a moonlit pool is to invite devious beings
into our world.