Hermit of the Natterknolls // Lone Wolf of the Natterknolls

Set name - Shadows over Innistrad
Whenever an opponent casts a spell during your turn, draw a card.
At the beginning of each upkeep, if no spells were cast last turn, transform this creature.

Whenever an opponent casts a spell during your turn, draw two cards.
At the beginning of each upkeep, if a player cast two or more spells last turn, transform this creature.

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He hates company . . .

. . . but he'll have you for lunch.