Blade of Gondolin is a favorite of mine. It's attack boost is situational, but for one cost it shouldn't matter much. It is restricted, but that is a minimal downside, considering that using it opens up use of sterner than steel and Foe-Hammer. The main reason to use this , however, is the Blade's response. Keep in mind that since it is in fact a response, not a forced effect, you could choose not to trigger it if you want to stall. Good card!
Blade of Gondolin
Attachment. Cost: 1.
Attach to a hero. Restricted.
Attached hero gets +1 when attacking an Orc.
Response: After attached hero attacks and destroys an enemy, place 1 progress token on the current quest.
It was rather splendid to be wearing a blade made in Gondolin for the goblin-wars of which so many songs had sung...
Core Set #39. Tactics.