Prices pulled directly from TCGplayer highlight a few essential trends: Icon cards dominate : Holo raritiesespecially Charizard, Blastoise, Venusaurcommand huge premiums due to their nostalgia, limited old print runs, and iconic artwork
This effect is not once per turn, nor once per chain, so if you send all 3, you can add 3 Naturia cards to your hand
1 Ipiria 1 Reptilianne Lamia 2 Rescue Rabbit 3 A Cell Recombination Device 3 Mysterious Triangle 1 Code A Ancient Ruins 1 Terraforming 1 Chicken Game 3 Mausoleum of White 2 Unexpected Dai 3 Snake Rain 3 Alien Shocktrooper M-Frame 1 Reptilianne Echidna 3 Cosmic Fortress Golgar 1 Reptilianne Hydra 1 Old Entity Hastorr 1 King of the Feral Imps 1 Black Luster Soldier Soldier of Chaos 1 Lyna the Light Charmer, Shining 1 Knightmare Phoenix 1 Link Spider 1 Salamangreat Almiraj
At this stage, I also like to do a preliminary digital color blocking, to make sure I have the color and value tangents worked out, and also to show my art director at WotC so they are on the same page as I am (no one likes surprises in the later stages of a commissioned art piece)