If you're making a bunch of white Servos and you have a fair amount of green +1/+1 counters matter cards, then Oath of Ajani is exactly what you want
This pair are great examples with the blue legendary one a smaller body but giving your stuff hexproof without any dials or wheels so you can target them is brilliant
This differs from tutoring where you look for the exact card you want from your entire deck and put it in your hand or on top of your library
In a corner case, if you have access to green, you can keep one Twin from Stangg, Echo Warrior
Aesi, Tyrant of Gyre Strait With Aesi, Tyrant of Gyre Strait, you can not only play two lands a turn, but you also get similar benefits to Tatyova, Benthic Druid
Deep Analysis Deep Analysis always gets cut from my normal decks, although that flashback looks tempting