Whenever a creature you control with an impostor counter on it dies, exile it
Despite the numerous options for countering this Deck, this Deck has the potential to overcome many of them, due to the effects of "Clover with Boar" and "Maple with Deer" (having the potential to destroy a monster or Spell/Trap on the field, respectively), as well as "Super Koi Koi" (being able to Special Summon up to 3 "Flower Cardian" monsters from the Deck as Level 2 monsters, enabling a follow-up play from the Extra Deck)
Brawl Legal Vintage Legal Timeless Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Legal Baldur's Gate Wilderness Dungeon Crash Landing Search your library for a basic land card, reveal it, put it into your hand, then shuffle
D) We rolled up our sleeves and watched a movie on the couch
The need of having a land drop open to you the turn you make Courser in order to get value is a shame too