If multiple Mountains you control enter at the same time, Valakut's second ability could trigger that many times
Long gone were the days of off-the-cuff phone descriptions of, Eh, I dunno, give me your take on insert subject here. We now entered the era of 1 thick style guides and very specific needs
An opponent then sifts through your deck and gives you a creature, a land, and noncreature, nonland card
I actually think it was smart to broaden its appeal outside of Assassin typal decks, because otherwise these cards would not see much play at all
5 Blue: Urza, Lord High Artificer Turn Artifacts Into Mana Urza, Lord High Artificer is such a strong commander that even purposefully weaker builds of Urza are still probably better than a lot of other decks someone can be playing