In a few cases, the adamant ability may replace the base effect with something better
Then, for each nonland card thats milled that way, they lose one life and remove a rad counter
Most World Championship competitors earned their invitation via top finishes at Pro Tour Phyrexia, Pro Tour March of the Machine, or Pro Tour The Lord of The Rings, but the field also includes Regional Champions, top finishers from Arena Championships, and Magic Online Champions Showcase winners, and the Top 4 of last year's World Championship
One interesting way to build Kenrith is to reduce the cost of its mana abilities by playing cards like Training Grounds or Zirda, the Dawnwaker and to untap your mana via Wilderness Reclamation to use it on your opponents turns
EDIT: There appear to be additional preview cards being shown inside of MagicCon Minneapolis