AP controls The Gitrog Monster and .Sinister Concoction.

AP activates Sinister Concoction ability. When he pays for the costs of the ability, he discards a land and mills another land.

How many cards does AP draw for The Gitrog Monster last ability?

Edited Francesco Scialpi (May 27, 2016 12:46:56 AM)

The active player will end up drawing two cards.

Sinister Concoction's “Put the top card of your library into your graveyard” and “Discard a card” are two different costs that are paid separately. As such the cards involved will be going to the graveyard at slightly different times, and each will trigger The Gitrog Monster when it does.