Like most Magic: The Gathering cards, the value of Ezio, Blade of Vengeance depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Assassin's Creed)
This encourages diplomacy and political play like no other Planechase card in Magic: The Gathering
I truly wonder what the secondary market price of this card might be like assuming whoever finds it would be willing to part with it
If you can attack with Ratadrabik one time while equipped, you end up with four copies of him
You can use it as a removal spell earlier when necessary
I imagine if some sort of self-mill and/or sacrifice space connects well with energy, the Marvel would be great for its static ability alone