The decks that want this card are going to love it, but they wont be common enough to keep this away from bulk rare status
If it gets removed from the battlefield by other means, that card remains exiled
The Steel-type from Space-Time Smackdown can hit for 110 while doing 20 damage to itself, while the Fire-type from Triumphant Light can do 80 for two Energy if it has any damage on it
Continuing the endless stream of spoilers, the Inside an Elevator Secret Lair Superdrop is slowly being spoiled
Additionally, Rare cards are also able to come in the Reverse Holo format, which would be in addition to the guaranteed Rare that is already included in the booster pack
For extra fun, play Reaper King as your commander and overload on Conspiracy and Arcane Adaptation effects to make sure all of your Wizards are also Scarecrows for maximum carnage, allowing you to blow up two permanents with every Wizard you cast once you get Reaper King on the battlefield