I haven’t lost yet to Wisps on Green day since I’ve used this team:
Queen Ysabelle
Forest Guardian
Ketras the Bull
Queen Aurora
Talon banner
One yellow match and you’re away. Skulls to the face, purples converted out and Ketras one shots the Kraken/Krystenax
I tend to use Queen Ysabelle first cast on herself, then on Ketras.
Aurora fills in two purple matches, then because of all colour coverage just cast her on the most dominant colour on the board, generally green of following a Forest Guardian cast.
Barriers galore help against other teams, just not Wisp or Kraken as much because if they cast/match a 4+.
I find it’s a very fun team team, strong in PvP too.