If a card or effect has a restriction on how often it can be activated, the specific wording of the restriction affects whether negated activations count towards this limit
Or maybe even if he could produce mana of any colour to enable things like Cranial Plating
Its a tonal standout among the Kaladesh Inventions, and a welcome reminder of the darkness at work behind the scenes on the Plane
Similar to Champion of Wits, Hour of Promise will most likely see the most play that it will while Ulamog, the Ceaseless Hunger is still in the format, but I also think that we are just scratching the surface on how good this card can be
A summoning condition that does not require fusion if you align the specified monsters on the field like Armitile
During the game, players will play more slowly, not to mention that this process will not be so fun