Elvish Promenade

Create a 1/1 green Elf Warrior creature token for each Elf you control.

Sol Ring

Avacyn's Pilgrim

Llanowar Elves

Collector Ouphe

Activated abilities of artifacts can't be activated.

Fyndhorn Elves

Selesnya Signet

Timberwatch Elf

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

Boreal Druid

Arbor Elf

Arcane Signet

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

Rhys the Redeemed

{2}{G/W}, {T}: Create a 1/1 green and white Elf Warrior creature token.
{4}{G/W}{G/W}, {T}: For each creature token you control, create a token that's a copy of that creature.

Mox Amber

{T}: Add one mana of any color among legendary creatures and planeswalkers you control.