Its a clean and simple two-for-one that leaves your opponents hand in shambles
Secret Lair drops are usually very small in terms of the number of cards they comprise
Then, and this is the main thing, Whenever Kroxa enters the battlefield or attacks, each opponent discards a card, then each opponent who didnt discard a nonland card this way loses 3 life. Kroxa is a bit odd, but theyre an all-rounder for discard decks
Verify footer codes (e.g., SLD) and context
Some things that could help are cards like Fire Prophecy , Stolen Strategy , Faithless Looting , Jeska's Will , Cavalier of Flame , Mask of Memory , Neheb, Dreadhoard Champion, and Valakut Exploration
Leaning on cards like Aerith Rescue Mission and Auron's Inspiration plays poorly versus job select tokens, Hecteyes, and toughness-oriented creatures like Goobbue Gardener and Scorpion Sentinel