This practice is more common with Magic: The Gathering counterfeits, but it does happen with Pokmon cards
Im a huge Headless Horseman fan in any shape and form, and as such this card absolutely gives me the shivers
Key cards: Thoughtseize, Daze, Griselbrand, Iona, Shield of Emeria, Tidespout Tyrant, Gitaxian Probe Cards to consider removing: Show and Tell, Preordain Cards to consider adding: Trickbind, Pithing Needle, Slaughter Pact, Spell Pierce, Swan Song, Surgical Extraction, Noxious Revival Storm: Flusterstorm is obviously very powerful here, as is an opposing Cabal Therapy or Duress
As stated above, if you have a multicolored deck that has green in it, my tip is to lean your manabase more towards green and use some of the spells found in The Best Green Ramp Spells guide to fix your colors