Landfall is a triggered ability on these cards, meaning its effect goes off whenever lands enter the battlefield under their controllers control
Both because they help further convey how good this mechanic is and because I have a strong feeling they are going to be important cards in the format
Dauthi Voidwalker is a 3/2 for two mana, which on its own is respectable, and it even has shadow to make it difficult to block
Creatures you control with enhancements on them have base power and toughness 8/8
Now, with this leyline, you, too, can join in on all the fun
If you skimmed and jumped to the number one spot, this is the fourth appearance of Ulamog, the Defiler on the list