when can you discard a card in mtg Adventures Standard: Makes Comeback Do you discard cards when

Major Subtractions: Zombie Infestation, Squee, Goblin Nabob

Since its a mono-colored deck, those Arena wildcards dont have to go towards lands, unless you're like me and splash blue with Steam Vents and Riverpyre Verge to play Scalding Viper

Spend this mana only to cast instant, sorcery, Demon, and Spirit spells

The MTG press release claims this set will include "hundreds of new cards to MTG Arena"

I dont know if this is the direct cause, but I havent gone back to play Deep Trouble again since it came out last May

The game tokens included in all of these products are better than nothing, but they are the thinnest possible cardboard that could still be considered cardboard and not just paper