Ilysian Caryatid

{T}: Add one mana of any color. If you control a creature with power 4 or greater, add two mana of any one color instead.

Slime Against Humanity

Create a 0/0 green Ooze creature token with trample. Put X +1/+1 counters on it, where X is two plus the total number of cards you own in exile and in your graveyard that are Oozes or are named Slime Against Humanity.
A deck can have any number of cards named Slime Against Humanity.

Tribute to the World Tree

Whenever a creature you control enters, draw a card if its power is 3 or greater. Otherwise, put two +1/+1 counters on it.

Recycle

Skip your draw step.
Whenever you play a card, draw a card.
Your maximum hand size is two.

Elvish Mystic

Llanowar Elves

Colossal Majesty

At the beginning of your upkeep, if you control a creature with power 4 or greater, draw a card.