In a format with fetchlands and cheap interaction, which is the foundation of Modern and Legacy, theres probably no safe Delve, but Im glad Wizards tested the boundaries with Treasure Cruise
But why would you get rid of the beatutiful rocks? To play them again of course
Personally, I would recommend you stay away from these unless you really want to collect them
And whenever theres a Magic release that really resonates with players, the card prices often rise to satisfy casual and competitive demand, which is whats happening with Tarkir: Dragonstorm
theyre creatures that reward you for playing a dragon-themed deck, either by creating more dragons or synergizing with the ones you already have
Storm the Seedcore is the best artwork of the year