Wizards of the Coast has confirmed that both Legendary and non-legendary creatures will receive this style, however they are all said to be 'iconic' of the Forgotten Realms setting
It also comes with upside later on down the road: the ability to cast cards from the yard
Sure, it cant Block, but the fact it can make opposing things unable to block when you sacrifice Treasure is pretty big for aggressive decks
Basically, there's almost no way that Secret Lair cards can be worth anywhere near their original foilsthey just aren't scarce enough
This is really tough to transform in Limited, but not impossible, especially in Red/Green
At the same time, Nami players are trying to fulfill Leader Nami s win condition, which reads When your deck is reduced to 0, you win the game instead of losing, according to the rules. So the longer the game takes, the better the odds are for you to win the game as you draw and trash cards, aiming to get your deck empty as fast as possible