The Gitrog Monster

Deathtouch
At the beginning of your upkeep, sacrifice The Gitrog Monster unless you sacrifice a land.
You may play an additional land on each of your turns.
Whenever one or more land cards are put into your graveyard from anywhere, draw a card.

Innistrad Remastered

Bloomburrow Commander

Secret Lair Drop

If multiple land cards are put into your graveyard at once, The Gitrog Monster’s last ability triggers only once. This could happen because an effect put them there from your library at the same time (such as by a mill effect) or because they were destroyed at the same time (such as two land creatures that were dealt lethal combat damage).