Ragavan, Nimble Pilferer is so strong that it had to be banned in Legacy, currently terrorizes Modern as part of Boros Energy, and it's very often seen as part of the 99 of top-tier cEDH decks
If you don't use the potential of the extra card, you are left fine-tuning your mana ratios in larger increments
Then if you control nine or more Wraiths, Wraiths you control have base power and toughness 9/9 until end of turn.
The intentional including of some weaker, not-on-theme cards for the reprint machine, like Brilliant Plan, Kongming, "Sleeping Dragon", or newer cards that weren't on theme like Tidal Force are the only things keeping the synergy from your deck from breaking people in the face unfairly
What are some glaring errors commonly found on fake Latias and Latios Gold Star cards
Core Colors of Clues