Unfortunately, Ulrich is unable to fight a Lambholt Pacifist or Duskwatch Recruit, so therell be some situations where it flips and does not get to fight anyway
Aclazotz, Deepest Betrayal and Ojer Taq, Deepest Foundation both seem like win more cards in their archetypes, and thus will show up in EDH decks on those themes (they give me heavy Erebos, Bleak-Hearted vibes)
The ramp there is skewed heavily towards green's land ramp spells like Nature's LoreNature's Lore and Sakura-Tribe ElderSakura-Tribe Elder
(Side note: I imagine Wizards designing Earthcraft and being like, "This really needs to say basic lands so it's not broken with Tolarian Academy" and feeling like they dodged a potential bullet, only to print the card and find out it was still super broken.) Playing cards for free with Dream Halls has the potential to do some really broken things
Legality depends on the tournament format -- Shock can be legal in some formats and banned or restricted in others