Devourer of Memory

Text:

Whenever one or more cards are put into your graveyard from your library, Devourer of Memory gets +1/+1 until end of turn and can't be blocked this turn.
: Mill a card.

Rulings:

• 1/24/2020 Devourer of Memory’s triggered ability grants it just +1/+1 each time cards are put into your graveyard from your library, no matter how many cards are put there at once.
• 1/24/2020 Once Devourer of Memory has been blocked, resolving its triggered ability (perhaps by activating its activated ability) won’t change or undo that block.