Courser of Kruphix is always a great card however he isn't that aggressive for a three drop and is only marginally helping you with your landfall triggers
Alpha/Beta It comes as no surprise that the first ever basic lands are some of the most expensive
Sven Stolz Named after one of the strongest editions that ever existed in history of MtG, Urzas Saga is the strongest land printed in the last couple of years
9c ST04-003-kaido-400 finds a spot in a plethora of purple ramp decks and ST04-016-blast-breath even sees use as a tech in a few other decks
The new game-mode, or format, pits the players against the nefarious Ursula as she tries to obtain Triton's Trident and rule the seven seas
If the first check fails (for example, because Redemption Choir is your only creature when it enters, and therefore you don't have coven), then nothing happens the ability never triggers