Leaf-Crowned Elder

Kinship — At the beginning of your upkeep, you may look at the top card of your library. If it shares a creature type with Leaf-Crowned Elder, you may reveal it. If you do, you may play that card without paying its mana cost.

Magnigoth Treefolk

Domain — For each basic land type among lands you control, Magnigoth Treefolk has landwalk of that type. (It can't be blocked as long as defending player controls a land of that type.)

Fangorn, Tree Shepherd

Treefolk you control have vigilance.
Whenever one or more Treefolk you control attack, add twice that much {G}.
You don't lose unspent green mana as steps and phases end.

Redwood Treefolk

Ironroot Treefolk

Scarwood Treefolk

Scarwood Treefolk enters the battlefield tapped.

Weatherseed Treefolk

Trample
When Weatherseed Treefolk dies, return it to its owner's hand.

Treefolk Seedlings

Treefolk Seedlings's toughness is equal to the number of Forests you control.

Treefolk Mystic

Whenever Treefolk Mystic blocks or becomes blocked by a creature, destroy all Auras attached to that creature.

Tilling Treefolk

When Tilling Treefolk enters the battlefield, you may return up to two target land cards from your graveyard to your hand.

Blanchwood Treefolk

Orchard Warden

Whenever another Treefolk creature enters the battlefield under your control, you may gain life equal to that creature's toughness.

Deadwood Treefolk

Vanishing 3 (This creature enters the battlefield with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
When Deadwood Treefolk enters or leaves the battlefield, return another target creature card from your graveyard to your hand.

Treefolk Harbinger

When Treefolk Harbinger enters the battlefield, you may search your library for a Treefolk or Forest card, reveal it, then shuffle and put that card on top.

Wandering Treefolk

Vigilance
Domain — {7}{G}: Seek a creature card. This ability costs {1} less to activate for each basic land type among lands you control.

Rowan Treefolk

Quickbeam, Upstart Ent

Whenever Quickbeam, Upstart Ent or another Treefolk enters the battlefield under your control, up to two target creatures each get +2/+2 and gain trample until end of turn.

Oaken Boon

Put two +1/+1 counters on target creature. (Then exile this card. You may cast the creature later from exile.)

Tuinvale Treefolk

Tuinvale Treefolk // Oaken Boon

Heartwood Treefolk

Forestwalk (This creature can't be blocked as long as defending player controls a Forest.)