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They dont have a coherent set of mechanics or abilities associated with them, but they do tend to be either hard to remove in some way or somehow disruptive or both
Engle Ive never paid too close attention to the art for Sakashima of a Thousand Faces, mostly because I was busy trying not to die
Its also colorless and goes in any EDH deck
Let's say youve been able to swing out with the Jumbo Cactuar, maybe you even managed to take out a player with that staggering 10,000 damage
Looking at other cards from the Gargoyle series, like Demona and Goliath, they appear to focus on hand manipulation