Changeling (This card is every creature type.)
Creatures target player controls get -2/-0 and lose all creature types until end of turn.

: 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.

Sacrifice Elvish Eulogist: You gain 1 life for each Elf card in your graveyard.

Whenever a player casts a Giant spell, you may put a +1/+1 counter on Elvish Handservant.

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

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

Whenever you clash, tap target creature an opponent controls. If you won, that creature doesn't untap during its controller's next untap step. (This ability triggers after the clash ends.)

Flash
Enchant creature
Enchanted creature gets +5/+5 and has trample.

Flying
Ethereal Whiskergill can't attack unless defending player controls an Island.

When Exiled Boggart dies, discard a card.

Destroy target non-Elf creature.

Whenever an opponent casts a blue spell during your turn, you may create a 4/4 green Elemental creature token.

, Sacrifice a Goblin: Facevaulter gets +2/+2 until end of turn.

Flash
Flying
When Faerie Harbinger enters the battlefield, you may search your library for a Faerie card, reveal it, then shuffle your library and put that card on top of it.

Whenever you cast a spell during an opponent's turn, you may have each opponent lose 1 life.

Counter target non-Faerie spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Whenever Fallowsage becomes tapped, you may draw a card.

As an additional cost to cast this spell, return a creature you control to its owner's hand.
Counter target spell.

Reveal cards from the top of your library until you reveal three nonland cards. Put the nonland cards revealed this way into your hand, then put the rest of the revealed cards on the bottom of your library in any order.

Trample
When Faultgrinder enters the battlefield, destroy target land.
Evoke (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)