During either player's turn, when a card or effect that targets a card(s) on the field is activated: You can Tribute 1 face-up Plant-Type monster; negate the activation, and if you do, destroy it.
Near Mint Unlimited - $0.90
Lightly Played Unlimited - $0.80
Moderately Played Unlimited - $0.70
Heavily Played Unlimited - $0.60
Damaged Unlimited - $0.50