I'm surprised that you dislike Crucible, Clemens (especially considering the presence of Stax and Loam in das alte Deutschland). Personally, I still find it key, particularly for the control matchup, since there is a noticeable power jump between having 4-5 lands in play and having 8-9 of them. Much like in Stax, it does little on its own, but it "enables" most of your deck: Decree and Eternal Dragon now become serious threats much earlier, and a single Mishra's Factory can force your opponent to play two creatures into a Wrath.