Cataclysmic Gearhulk [Kaladesh Inventions] Cat Construct Tawnos finally cracked the puzzle:

Tawnos finally cracked the puzzle: the strange structures did not house Mishra's malevolent creations but were themselves among his creations

{T}: Destroy target black permanent

Shuffle Beacon of Immortality into its owner's library

a wealthy noble

When Parallax Wave leaves the battlefield

Cataclysmic Gearhulk [Kaladesh Inventions] Cat Construct Tawnos finally cracked the puzzle:Set: Kaladesh Inventions Type: Artifact Creature Construct Mythic Cost: {3}{W}{W} Vigilance When Cataclysmic Gearhulk enters the battlefield, each player chooses an artifact, a creature, an enchantment, and a planeswalker from among the nonland permanents they control, then sacrifices the rest.