Each creature gets +1/+1 for each other creature on the battlefield that shares at least one creature type with it. (For example, if two Goblin Warriors and a Goblin Shaman are on the battlefield, each gets +2/+2.)
{3}{G}{G}
Elvish Bard
Creature - Elf Shaman Bard
All creatures able to block Elvish Bard do so.
2 /
4
{1}{G}{G}
Elvish Champion
Creature - Elf
Other Elf creatures get +1/+1 and have forestwalk. (They can't be blocked as long as defending player controls a Forest.)
2 /
2
{2}{G}
Elvish Guidance
Enchantment - Aura
Enchant land
Whenever enchanted land is tapped for mana, its controller adds an additional {G} for each Elf on the battlefield.
{2}{G}
Elvish Harbinger
Creature - Elf Druid
When Elvish Harbinger enters the battlefield, 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.
1 /
2
{X}{G}
Enshrined Memories
Sorcery
Reveal the top X cards of your library. Put all creature cards revealed this way into your hand and the rest on the bottom of your library in any order.
{1}{G}{G}
Eternal Witness
Creature - Human Shaman
When Eternal Witness enters the battlefield, you may return target card from your graveyard to your hand.
2 /
1
{1}{G}
Fauna Shaman
Creature - Elf Shaman
{G}, {T}, Discard a creature card: Search your library for a creature card, reveal it, put it into your hand, then shuffle.
2 /
2
{4}{G}
Genesis
Creature - Incarnation
At the beginning of your upkeep, if Genesis is in your graveyard, you may pay {2}{G}. If you do, return target creature card from your graveyard to your hand.
4 /
4
{2}{G}{G}
Harmonize
Sorcery
Draw three cards.
{3}{G}
Heedless One
Creature - Elf Avatar
Trample
Heedless One's power and toughness are each equal to the number of Elves on the battlefield.
* /
*
{2}{G}{G}
Lys Alana Huntmaster
Creature - Elf Warrior
Whenever you cast an Elf spell, you may create a 1/1 green Elf Warrior creature token.
3 /
3
{5}
Mind's Eye
Artifact
Whenever an opponent draws a card, you may pay {1}. If you do, draw a card.
{2}{G}{G}
Momentous Fall
Instant
As an additional cost to cast this spell, sacrifice a creature.
You draw cards equal to the sacrificed creature's power, then you gain life equal to its toughness.
{4}{G}{G}
Primordial Sage
Creature - Spirit
Whenever you cast a creature spell, you may draw a card.
4 /
5
{4}{G}{G}{G}
Regal Force
Creature - Elemental
When Regal Force enters the battlefield, draw a card for each green creature you control.
5 /
5
{1}{G}
Seeker of Skybreak
Creature - Elf
{T}: Untap target creature.
2 /
1
{G}
Taunting Elf
Creature - Elf
All creatures able to block Taunting Elf do so.
0 /
1
{2}{G}{G}
Triumph of the Hordes
Sorcery
Until end of turn, creatures you control get +1/+1 and gain trample and infect. (Creatures with infect deal damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
{3}
Umbral Mantle
Artifact - Equipment
Equipped creature has "{3}, {Q}: This creature gets +2/+2 until end of turn." ({Q} is the untap symbol.)
Equip {0}
{3}{G}{G}
Ursapine
Creature - Beast
{G}: Target creature gets +1/+1 until end of turn.
3 /
3
{3}{G}{G}{G}
Vigor
Creature - Elemental Incarnation
Trample
If damage would be dealt to another creature you control, prevent that damage. Put a +1/+1 counter on that creature for each 1 damage prevented this way.
When Vigor is put into a graveyard from anywhere, shuffle it into its owner's library.
6 /
6
{3}{G}
Wirewood Channeler
Creature - Elf Druid
{T}: Add X mana of any one color, where X is the number of Elves on the battlefield.
2 /
2
{G}
Wirewood Symbiote
Creature - Insect
Return an Elf you control to its owner's hand: Untap target creature. Activate only once each turn.
1 /
1
{1}{G}
Wren's Run Vanquisher
Creature - Elf Warrior
As an additional cost to cast this spell, reveal an Elf card from your hand or pay {3}.
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)