Grizzled Studier

At the beginning of your upkeep Grizzled Studier explores (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.), then put a -1/-1 counter on Grizzled Studier.
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It's a shame, the more he learns the more he forgets.