Marwyn, the Nurturer

Whenever another Elf you control enters, put a +1/+1 counter on Marwyn, the Nurturer.
{T}: Add an amount of {G} equal to Marwyn's power.

Overcome

Creatures you control get +2/+2 and gain trample until end of turn.

Band Together

Up to two target creatures you control each deal damage equal to their power to another target creature.

Bounty of Skemfar

Reveal the top six cards of your library. You may put a land card from among them onto the battlefield tapped and an Elf card from among them into your hand. Put the rest on the bottom of your library in a random order.

Llanowar Visionary

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

Dwynen's Elite

When Dwynen's Elite enters, if you control another Elf, create a 1/1 green Elf Warrior creature token.

Tajuru Pathwarden

Forest

Thriving Grove

Thriving Grove enters tapped. As it enters, choose a color other than green.
{T}: Add {G} or one mana of the chosen color.

Llanowar Elves

Go Forth

Choose one—
• Search your library for a basic land card, reveal it, put it into your hand, then shuffle.
• Target creature gets +2/+2 until end of turn.

Razorgrass Invoker

Vigilance (Attacking doesn't cause this creature to tap.)
{8}: Razorgrass Invoker and up to one other target creature each get +3/+3 until end of turn.

Dionus, Elvish Archdruid

Elves you control have "Whenever this creature becomes tapped during your turn, untap it and put a +1/+1 counter on it. This ability triggers only once each turn."