In 2019, I snagged one of the first Secret Lair sets, Kaleidoscope Killers, which featured amazing art by Justine Jones on three five-color legends, including The Ur-Dragon
or prevent the next 3 damage that would be dealt to any target this turn
Not all mono-color decks want this, though
That's a delicate balancing act when the deck is also asking you to be relentlessly aggressive
If an Adventure spell leaves the stack in any way other than resolving (most likely by being countered or by failing to resolve because its targets have all become illegal) , that card won't be exiled and the spell's controller won't be able to play that card from exile later
However, if you practice and learn how best to play the cards in your deck youll win more often