Alloy Myr

Sky Diamond

Plains

Glittermonger

{T}: Create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Azorius Signet

Boreal Druid

Elvish Harbinger

When Elvish Harbinger enters, you may search your library for an Elf card, reveal it, then shuffle and put that card on top.
{T}: Add one mana of any color.

Gyre Engineer

Incubation Druid

{T}: Add one mana of any type that a land you control could produce. If Incubation Druid has a +1/+1 counter on it, add three mana of that type instead.
{3}{G}{G}: Adapt 3. (If this creature has no +1/+1 counters on it, put three +1/+1 counters on it.)

Circle of Dreams Druid

{T}: Add {G} for each creature you control.

Moss Diamond

Moss Diamond enters tapped.
{T}: Add {G}.

Boros Signet

Copper Myr

Esper Sentinel

Whenever an opponent casts their first noncreature spell each turn, draw a card unless that player pays {X}, where X is Esper Sentinel's power.

Devoted Druid

{T}: Add {G}.
Put a -1/-1 counter on Devoted Druid: Untap Devoted Druid.

Palladium Myr

Arcane Signet

{T}: Add one mana of any color in your commander's color identity.

Loam Dryad

{T}, Tap an untapped creature you control: Add one mana of any color.

Maraleaf Pixie

Manaweft Sliver

Sliver creatures you control have "{T}: Add one mana of any color."

Fire Diamond

Fire Diamond enters tapped.
{T}: Add {R}.

Sylvok Explorer

{T}: Add one mana of any color that a land an opponent controls could produce.

Reclusive Taxidermist

Reclusive Taxidermist gets +3/+2 as long as there are four or more creature cards in your graveyard.
{T}: Add one mana of any color.

Sol Ring

Island

Bloom Tender

{T}: For each color among permanents you control, add one mana of that color.

Ignoble Hierarch

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)
{T}: Add {B}, {R}, or {G}.

Rattleclaw Mystic

{T}: Add {G}, {U}, or {R}.
Morph {2} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
When Rattleclaw Mystic is turned face up, add {G}{U}{R}.

Birds of Paradise

Avacyn's Pilgrim

Elves of Deep Shadow

{T}: Add {B}. Elves of Deep Shadow deals 1 damage to you.

Marble Diamond

Marble Diamond enters tapped.
{T}: Add {W}.

Harvester Druid

{T}: Add one mana of any color that a land you control could produce.

Golgari Signet

Silver Myr

Dimir Signet

Gold Myr

Quirion Explorer

Mind Stone

{T}: Add {C}.
{1}, {T}, Sacrifice Mind Stone: Draw a card.

Knotvine Mystic

Noble Hierarch

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)
{T}: Add {G}, {W}, or {U}.

Forest

Najeela, the Blade-Blossom

Whenever a Warrior attacks, you may have its controller create a 1/1 white Warrior creature token that's tapped and attacking.
{W}{U}{B}{R}{G}: Untap all attacking creatures. They gain trample, lifelink, and haste until end of turn. After this phase, there is an additional combat phase. Activate only during combat.

Charcoal Diamond

Charcoal Diamond enters tapped.
{T}: Add {B}.

Skull Prophet

{T}: Add {B} or {G}.
{T}: Mill two cards.

Elvish Mystic

Skyshroud Elf

Mass Hysteria

Gruul Signet

Iron Myr

Swamp

Beast Whisperer

Whenever you cast a creature spell, draw a card.

Rootcoil Creeper

{T}: Add one mana of any color.
{T}: Add two mana of any one color. Spend this mana only to cast spells from your graveyard.
{G}{U}, {T}, Exile Rootcoil Creeper: Return target card with flashback you own from exile to your hand.

Blossom-Clad Werewolf

{T}: Add two mana of any one color.
Nightbound (If a player casts at least two spells during their own turn, it becomes day next turn.)

Weaver of Blossoms

{T}: Add one mana of any color.
Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

Weaver of Blossoms // Blossom-Clad Werewolf

Fyndhorn Elves

Sylvan Caryatid

Defender, hexproof
{T}: Add one mana of any color.

Wirewood Channeler

{T}: Add X mana of any one color, where X is the number of Elves on the battlefield.

Naga Vitalist

{T}: Add one mana of any type that a land you control could produce.

Urborg Elf

Deathcap Cultivator

{T}: Add {B} or {G}.
Delirium — Deathcap Cultivator has deathtouch as long as there are four or more card types among cards in your graveyard.

Llanowar Elves

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.

Arbor Elf

Utopia Tree

Ornithopter of Paradise

Leaden Myr

Druid of the Anima

Mountain

Paradise Druid

This creature has hexproof as long as it's untapped. (It can't be the target of spells or abilities your opponents control.)
{T}: Add one mana of any color.

Drover of the Mighty

Drover of the Mighty gets +2/+2 as long as you control a Dinosaur.
{T}: Add one mana of any color.