Unitatem, Lake of Wisdom

(When you draw this event creature, cast it as its
event effect and exile this card, then draw a card. You
may cast this creature later from exile.)
Event Chant of Tranquil & Silence —
Until your next upkeep, the first spell casted by
each player is countered.
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Vigilance, impartial (This creature can't block and
can't be blocked.)
Instant spells you cast cost {1} less to cast.