That Lady Tremaine obviously has the drawback of your opponent getting to choose what is removed, whereas with this Medusa you get to choose, provided the target has 3 or less Strength
For the best results, its recommended to keep your deck to a minimum size
If you are capable of healing your cards, through items, actions, or character abilities, and Beast, Tragic Hero has damage on them at the start of your turn, you can let them attack and then heal them, allowing you to still benefit from the increased strength but keeping them healthy enough to stick around
Pair Perdita, Devoted Mother with some 2 cost characters that have abilities trigger when they enter play like Pinocchio, Talkative Puppet and youve got yourself an effective little recursion engine
Knight of the White Orchid also gives you the ability to drop an extra land when it comes into play , as long as you're already behind on land