A good strategy for Plant Token Decks is to summon several Tokens on your opponent's side of the field, then equip this card to a Rose Tentacles. Rose Tentacles will be able to attack for what is essentially direct damage as many times as your opponent has Tokens on their side of the field.
This card's ability to weaken any monster the equipped monster attacks is a great way to make it easier for your weaker monsters.
Alternatively, you can use this card to repeatedly weaken a monster, but not destroy it. The opponent would take 600 more damage each time the card was attacked. This is particularly effective against cards that activate their effects if destroyed by battle.
Use this card with "Mask of Restrict" so your opponent can't tribute the monsters protected by the second effect.