plus de biblio et dragage

La question est simple: si on a plus de bibliothèque peut-on quand même activé la capacité de dragage?

Le dragage n'est pas une capacité activée mais une capacité statique qui crée un effet de remplacement.
Pour répondre à ta question la réponse est non.
Voilà la règle:

502.47. Dredge

502.47a Dredge is a static ability that functions only while the card with dredge is in a player’s graveyard. “Dredge N” means “As long as you have at least N cards in your library, if you would draw a card, you may instead put N cards from the top of your library into your graveyard and return this card from your graveyard to your hand.”

502.47b A player with fewer cards in his or her library than the number required by a dredge ability can’t put any of them into his or her graveyard this way.

ca aurait été trop beau...