Thran Weaponry (2.907) High activation cost and it is for ALL creatures.
Umbilicus (3.667) Worth a build-around with landfall and ETB effects.
Lifeline (4.346) Broken Urza card is broken. Requires some thinking to make
it work, and it is worth a later try.
Amulet of Unmaking (2.557) Very expensive removal.
Citanul Flute (4.048) There are better tutors now but it is worth a try just for
fun.
Mangara's Tome (4.088) A great build-around card that is worth an early try.
Purging Scythe (3.888) Interesting but late high cost effect.
Urza's Blueprints (2.823) Worth it for an echo learning deck. Card draw late game
could be a lot of fun.
Volrath's Laboratory (3.062) Old school token generating card not worth trying for my
first round.