Great Oak Guardian

Flash (You may cast this spell any time you could cast an instant.)
Reach
When this creature enters, creatures target player controls get +2/+2 until end of turn. Untap them.

Civic Gardener

Whenever this creature attacks, untap target creature or land.

Saryth, the Viper's Fang

Other tapped creatures you control have deathtouch.
Other untapped creatures you control have hexproof.
{1}, {T}: Untap another target creature or land you control.

Llanowar Elves

Elvish Mystic

Leafkin Druid

{T}: Add {G}. If you control four or more creatures, add {G}{G} instead.

Scryb Ranger

Flash
Flying, protection from blue
Return a Forest you control to its owner's hand: Untap target creature. Activate only once each turn.

Forest

Sudden Spinnerets

Target creature gets +1/+3 until end of turn. Put a reach counter on it. Untap it.

Quirion Ranger

Return a Forest you control to its owner's hand: Untap target creature. Activate only once each turn.

Veteran's Reflexes

Target creature gets +1/+1 until end of turn. Untap that creature.

Ulvenwald Abomination

Ulvenwald Captive

Defender
{T}: Add {G}.
{5}{G}{G}: Transform this creature.

Ulvenwald Captive // Ulvenwald Abomination

Selvala, Explorer Returned

Parley — {T}: Each player reveals the top card of their library. For each nonland card revealed this way, add {G} and you gain 1 life. Then each player draws a card.

Djeru's Resolve

Untap target creature. Prevent all damage that would be dealt to it this turn.
Cycling {2} ({2}, Discard this card: Draw a card.)

Burst of Strength

Put a +1/+1 counter on target creature and untap it.

Hyrax Tower Scout

When this creature enters, untap target creature.

Plains

Vine Trellis

Defender (This creature can't attack.)
{T}: Add {G}.

Seeker of Skybreak

Scale Deflection

Put two +1/+1 counters on target creature and untap it. It gains hexproof until end of turn. (Then exile this card. You may cast the creature later from exile.)

Dread Linnorm

This creature can't be blocked by creatures with power 3 or less.

Dread Linnorm // Scale Deflection

Wirewood Elf

Dauntless Aven

Flying
Whenever this creature attacks, untap target creature you control.

Fyndhorn Elves

Vines of the Recluse

Target creature gets +1/+2 and gains reach until end of turn. Untap it. (A creature with reach can block creatures with flying.)