Keyword: Undergrowth

Undergrowth — When Kraul Foragers enters the battlefield, you gain 1 life for each creature card in your graveyard.

Undergrowth — When Izoni, Thousand-Eyed enters the battlefield, create a 1/1 black and green Insect creature token for each creature card in your graveyard.
, Sacrifice another creature: You gain 1 life and draw a card.

Undergrowth — Target creature gets -X/-X until end of turn, where X is the number of creature cards in your graveyard. If that creature would die this turn, exile it instead.

Undergrowth — When Lotleth Giant enters the battlefield, it deals 1 damage to target opponent for each creature card in your graveyard.

Undergrowth — When Kraul Foragers enters the battlefield, you gain 1 life for each creature card in your graveyard.

Undergrowth — When Vigorspore Wurm enters the battlefield, target creature gains vigilance and gets +X/+X until end of turn, where X is the number of creature cards in your graveyard.
Vigorspore Wurm can’t be blocked by more than one creature.

Undergrowth — Search your library for a black card with converted mana cost less than or equal to the number of creature cards in your graveyard, reveal it, put it into your hand, then shuffle your library.

Reach
Undergrowth — When you cast this spell, reveal the top X cards of your library, where X is the number of creature cards in your graveyard. You may put a green permanent card with converted mana cost X or less from among them onto the battlefield. Put the rest on the bottom of your library in a random order.

Undergrowth — This spell costs less to cast for each creature card in your graveyard.
When Molderhulk enters the battlefield, return target land card from your graveyard to the battlefield.

Reach
Undergrowth — When you cast this spell, reveal the top X cards of your library, where X is the number of creature cards in your graveyard. You may put a green permanent card with converted mana cost X or less from among them onto the battlefield. Put the rest on the bottom of your library in a random order.

Undergrowth — Rhizome Lurcher enters the battlefield with a number of +1/+1 counters on it equal to the number of creature cards in your graveyard.

Undergrowth — When Izoni, Thousand-Eyed enters the battlefield, create a 1/1 black and green Insect creature token for each creature card in your graveyard.
, Sacrifice another creature: You gain 1 life and draw a card.

Undergrowth — When Moodmark Painter enters the battlefield, target creature gains menace and gets +X/+0 until end of turn, where X is the number of creature cards in your graveyard. (It can’t be blocked except by two or more creatures.)

Undergrowth — When Izoni, Thousand-Eyed enters the battlefield, create a 1/1 black and green Insect creature token for each creature card in your graveyard.
, Sacrifice another creature: You gain 1 life and draw a card.

Reach
Undergrowth — When Kraul Harpooner enters the battlefield, choose up to one target creature with flying you don’t control. Kraul Harpooner gets +X/+0 until end of turn, where X is the number of creature cards in your graveyard, then you may have Kraul Harpooner fight that creature.

Undergrowth — Search your library for a black card with converted mana cost less than or equal to the number of creature cards in your graveyard, reveal it, put it into your hand, then shuffle your library.

Undergrowth — Search your library for a black card with converted mana cost less than or equal to the number of creature cards in your graveyard, reveal it, put it into your hand, then shuffle your library.

Haste
Undergrowth — Golgari Raiders enters the battlefield with a +1/+1 counter on it for each creature card in your graveyard.

Undergrowth — Target creature gets -X/-X until end of turn, where X is the number of creature cards in your graveyard. If that creature would die this turn, exile it instead.