If any lands wind up in the battlefield, The Necrobloom can dredge them back to your hand by milling two cards
Its potentially incredibly powerful, depending on your strategy
Like most Magic: The Gathering cards, the value of Saruman of Many Colors depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (The Lord of the Rings: Tales of Middle-earth)
He's great leading a Commander deck or in the 99 with Jhoria, Weatherlight Captain in Izzet or Boros's Sram to draw cards while killing stuff
Lucky fits perfectly into the aggro archetype and provides some explosive lore-gaining potential that can help close out games quickly, or, alternatively, high volume card draw (as many as four per turn!) to help your aggro deck avoid running out of gas
Normally, this means the token will simply be a Compy Swarm, but if any copy effects have affected the original Compy Swarm, the token will take those into account