Leyline of the Meek

If this card is in your opening hand, you may begin the game with it on the battlefield.
Creature tokens get +1/+1.

Soul Warden

Whenever another creature enters, you gain 1 life.

Juniper Order Ranger

Whenever another creature you control enters, put a +1/+1 counter on that creature and a +1/+1 counter on this creature.

Saproling

Supply // Demand

Supply

Create X 1/1 green Saproling creature tokens.

Demand

Search your library for a multicolored card, reveal it, put it into your hand, then shuffle.

Herd Gnarr

Whenever another creature you control enters, this creature gets +2/+2 until end of turn.

Scatter the Seeds

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Create three 1/1 green Saproling creature tokens.

Thallid Germinator

At the beginning of your upkeep, put a spore counter on this creature.
Remove three spore counters from this creature: Create a 1/1 green Saproling creature token.
Sacrifice a Saproling: Target creature gets +1/+1 until end of turn.

Fertile Imagination

Choose a card type. Target opponent reveals their hand. Create two 1/1 green Saproling creature tokens for each card of the chosen type revealed this way. (Artifact, battle, creature, enchantment, instant, kindred, land, planeswalker, and sorcery are card types.)

Forest

Gilt-Leaf Alchemist

Plains

Beast of Burden

Beast of Burden's power and toughness are each equal to the number of creatures on the battlefield.

Sandsower

Tap three untapped creatures you control: Tap target creature.

Salvat 2005