Ents in Search of Ent-wives (EiSotE), also known as Ents desperately seeking a date, are at 14/8 quite something; hard to overcome and their body makes it very difficult for minions to collect the measly 1 MP.
It is unfortunate that they and the other awakened plants must wait for future sets to achieve their full potential. EiSotE, Huorn and Old Man Willow are currently the only examples of awakened plants. You cannot build a hazard strategy around them, instead you can use them to supplement other strategies.
Their limitation to one strike, even at respectable prowess, is disappointing. How many times when camping did I get whipped in the face by unseen branches? Worse, how about the pine sap that gets in your hair and on your clothes in and on your weapons and armour?
"Hundreds of Butterflies" and "15 Birds in 5 Fir Trees" should require a saving throw against tree sap, else each character and each item must be or remain tapped for two turns. Still, these three hazard creatures can be played across much of Middle Earth.
These three awakened plants are worthy of inclusion in your deck in terms of versatility. They can be played in most of the trafficked areas in Middle Earth.
Huorns can be played at:
 Sites: Keyable to Druadan Forest, Old Forest, and Wellinghall; OR
 Regions: Keyable to Heart of Mirkwood, Southern Mirkwood, Western Mirkwood and Woodland Realm; and may also be played at Ruins & Lairs and Shadow-holds in these regions; OR
 Regions: Keyable to one wilderness.I find it most odd that they cannot be keyed to Gap of Isen and to Isengard, considering their role in Isengard: eradicating orcs and cleaning up Orthanc.
Yes, you can use Gloom or Fell Winter's second ability in conjunction with Doors of Night, but this is contrary to the sense of play. Fog is the only resource that approximates the environment and game aspects of what took place in the book. Similarly, they should be explicitly playable at Fangorn, even if the region type is changed through a mechanism of the game.
Where can Huorns not be played?
Places where men or orcs have inhabited for a considerable length of time. Basically, you can play Huorns everywhere but in the North (due to the Angmarim and Orcs of Gundabad), in the Southeast (due to inhospitable conditions, orcs, or pollution) and in the South Central Middle Earth (due to men and dunedain).
Old Man Willow can be played at:
 Sites: Playable at Old Forest and Druadan Forest; OR
 Keyable to Fangorn, Heart of Mirkwood, Southern Mirkwood, and Western Mirkwood, and may be played at Ruins & Lairs, Shadow-holds and Dark-holds in these regions; OR
 Keyable to double wildernesses.
Ents in Search of Ent-wives can be played at:
 Regions: double wildernesses, border-lands, free-domains; AND
 Regions: Shadow-lands IF Doors of Night are NOT in play.
Not keyable to Fangorn and Wellinghall? OK, I grant you that they are searching for their Ent-wives, but still... Note, you can change the region type first with environment cards, then play the Ents in Search of Ent-wives. YES, the forest retakes Angmar and Gundabad!
So, you want to flesh out a hazard strategy that leaves certain areas under represented? Perhaps you are playing in a sealed deck tournament. For either of these reasons, awakened plants should seriously be considered for inclusion in your deck.
a. Ent in Search of Entwives
MELE - U
Hazard Creature :: 1* MP :: 14/8 :: Keyable: ww b f
Awakened Plant. One strike (detainment against covert and hero companies).
If Doors of Night is not in play, may also be played keyed to Shadow-lands.
METW - C
Hazard Creature :: CA1
1 MP :: 10/- :: Keyable: w
Awakened Plant. One strike. May also be played at Druadan Forest, Old Forest, and Wellinghall. May also be played keyed to Heart of Mirkwood, Southern Mirkwood, Western Mirkwood, and Woodland Realm; and may also be played at Ruins & Lairs in these regions.
Art by April Lee.
MELE - C
Hazard Creature :: 1 MP :: 10/- :: Keyable: w
Awakened Plant. One strike. May also be played at Druadan Forest, Old Forest, and Wellinghall. May also be played keyed to Heart of Mirkwood, Southern Mirkwood, Western Mirkwood, and Woodland Realm; and may also be played at Ruins & Lairs and Shadow-holds in these regions.
d. old man willow
METW - U
Hazard Creature :: 1 MP :: 13/- :: Keyable: ww
Awakened Plant. One strike. 15 prowess against Hobbits. May also be played keyed to Fangorn, Heart of Mirkwood, Southern Mirkwood, and Western Mirkwood; and may also be played at Ruins & Lairs, Shadow-holds, and Dark-holds in these regions. Also playable at Old Forest and Druadan Forest.
Two Wildernesses in site path are required.
Art by Angus McBride.
Kelvar and Olvar are like Fauna and Flora, respective Animal and Plant. Silmarillion (Ballantyne paperback ed.) pp 43 - 45.
Original card review taken from : http://fan.theonering.net/morgulrats/
With the authorization of the webmaster.
The reviewing team consisted of Gwaihir (Chris Farrell), Gimli (Nathan Bruinooge), Ohtar (Charles E. Bouldin, Esq.), Radagast (James Kight), Joshua B. Grace (Beorn), Martijn Steultjens (Fram Frumgarson), Jason Klank (Saruman) and Jeffery Dobberpuhl (Wormtongue)