Like most Pokmon cards, the value of Chansey depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (FireRed & LeafGreen)
Rarity: M Cost: 3BB Card Type: Planeswalker - Liliana Artist: Chris Rallis Name: Liliana, Death's Majesty Finish: Regular Card Number: 097/269 Set Name: Mystery Booster - Amonkhet Related Products Liliana, Death's Majesty Amonkhet Light Play, English 4 In Stock Light Play, English 4 In Stock Light Play, English 4 In Stock Kabira Vindicator - The List The List Near Mint, English 2 In Stock Near Mint, English 2 In Stock Near Mint, English 2 In Stock Glint The List Light Play, English 1 In Stock Light Play, English 1 In Stock Light Play, English 1 In Stock Darksteel Ingot - The List The List Near Mint, English 1 In Stock Near Mint, English 1 In Stock Near Mint, English 1 In Stock TL;DR The List Near Mint, English 1 In Stock Near Mint, English 1 In Stock Near Mint, English 1 In Stock Swarm of Locus (No PW Symbol) The List Near Mint, English 1 In Stock Near Mint, English 1 In Stock Near Mint, English 1 In Stock Slavering Nulls - The List The List Near Mint, English 3 In Stock Near Mint, English 3 In Stock Near Mint, English 3 In Stock Grim Strider - The List The List Near Mint, English 1 In Stock Near Mint, English 1 In Stock Near Mint, English 1 In Stock
In the Jace example, if there were two cards in your original graveyard and three cards in your newly-appropriated graveyard, that would satisfy Jace's requirement
Playing it in multiples is just mean
6 defense makes her resilient in play, hopefully allowing for some solid lore generation before any opponents manage to take her off the table
