(You may cast this card from your graveyard for its escape cost.) Whenever Kroxa enters or attacks, each opponent discards a card, then each opponent who didn't discard a nonland card this way loses 3 life
Even for the baseline ability, nabbing a single extra card per turn for a minor loss of life is usually worth the trade-off, and seeing as the Confidant is usually a removal magnet early, you likely wont have to worry too much about slipping into the danger zone
The Ur-Dragon Cost reduction from the command zone is just plain unfair, especially for a creature type that benefits so immensely from mana acceleration
or Svyelun of Sea and Sky
however, they will utilize existing art found on Standard cards
Card Name Mana Cost Type Enchantment Rarity Rare rules Text Whenever your commander enters or attacks, look at the top six cards of your library