You can banish this card from the Graveyard; Special Summon 1 Plant-Type monster from your hand, and if you do, it is unaffected by your opponent's Trap effects this turn. You can only use this effect of "Rose Lover" once per turn.
I know sylvan is an archetype and konamy never nerfs an archetype (specially when there are from boxes)
But can nerf this cancer: you don't spend gems or money to get it and makes sylvans op. Enemy always summon very powerful monsters like hermitree and guardyoak and continues to destroy your monsters and backrow by excavating his deck, and even you have still some backrow on the field, usually it will be useless to protect youself by opponent's monsters. So i think this is a true cancer card that needs nerfs by konami