The advent of cloudsculpting ended the use of mechanical locks in Illvoi society
Looking at peoples hands is an effect that is very hard to place a value on because it depends on so many factors, many of which are outside of the normal considerations for cards
For example, Brago, King Eternal decks love Strionic Resonator so they'll run Lithoform Engine to also copy triggered abilities, but in the game they may also want to copy an activated ability like cracking a Flooded Strand for two lands, or copy Diluvian Primordial if they have four extra mana when they cast it
This allows them to put cards in their cubes like Holiday promos and cards from the Un-sets that cant be used in sanctioned Magic
Its less efficient than Gaeas Cradle because it costs mana to activate the second ability and youre locked into a single creature type, but it can produce mana of any color and even makes colorless on an empty board
It phases in before its controller untaps during their next untap step.) Target player mills four cards