10 cards where the mana cost is greater than or equal to {C} and the cards become permanents

Deceiver of Form (Oath of the Gatewatch #1)
Endbringer (Commander Masters #803)
Flayer of Loyalties (Commander Masters #715)
It That Heralds the End (Modern Horizons 3 #9)
Kozilek, the Great Distortion (Commander Masters #2)
Matter Reshaper (Commander Masters #806)
Reality Smasher (Oath of the Gatewatch #7)
Thought-Knot Seer (Oath of the Gatewatch #9)
Walker of the Wastes (Oath of the Gatewatch #10)
Zhulodok, Void Gorger (Commander Masters #704)

This search is finished. Now the real work can begin.