You get to draw a card when a creature with defender comes into play, which is already a good replacement for plenty of blue game changer cards
In fact, the Dragonite VSTAR Deck profile, regardless of what you combine it with (it can be Shady Dealings Inteleon, Industrious Incisors Bibarel, or Lost Zone Comfey, as you wish), only uses the basic trainer cards and a lot of Energy Cards
This works on multiple axes, including that of storyline (Vorthos) and tournament play (Spike)
Whiptongue Hydra One of the more unique hydras, Whiptongue Hydra is a flier terminator
Grand Crescendo is ideal for this because it has the protection spell mode, but if you draw it after the board wipe, it helps you rebuild whereas something like Heroic Intervention only works reactively