Lys Alana Huntmaster

Whenever you cast an Elf spell, you may create a 1/1 green Elf Warrior creature token.

Don't Have

{T}: Until end of turn, target Forest becomes an X/X Treefolk creature in addition to its other types, where X is the number of Elves you control.

When Sylvan Ranger enters, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.

{T}: Target creature gets +X/+X until end of turn, where X is the number of Elves on the battlefield.

{T}: You gain 1 life for each Elf on the battlefield.

Tranquil Thicket enters tapped.
{T}: Add {G}.
Cycling {G} ({G}, Discard this card: Draw a card.)

Target creature gets +X/+X until end of turn, where X is the number of Elves on the battlefield.

When Llanowar Visionary enters, draw a card.
{T}: Add {G}.

{T}: Add {G} for each Elf on the battlefield.

When Elvish Visionary enters, draw a card.

When Wirewood Herald dies, you may search your library for an Elf card, reveal that card, put it into your hand, then shuffle.

Enchant land
Whenever enchanted land is tapped for mana, its controller adds an additional {G} for each Elf on the battlefield.