Many force their opponents to mill their decks, hoping to bin some of their best cards - or force the player to lose the game by running out of cards to draw
Its possible that the cards as they are currently templated or costed might be too good
In one of my advertising classes, I stumbled onto a neat little tool called a psychographic profile
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
Its also a solid roleplayer in green decks that want to use Green Sun's Zenith as a turn-1 mana dork or that want a cheap creature to sacrifice to Natural Order
You can easily have a good experience with these decks