Its a Sapphire card, with Sapphire being one of the 6 Lorcana Ink types alongside Amber, Amethyst, Emerald, Ruby and Steel
While it might be hard to use earlier in the game, you can always just ink Yzma or use her to quest a little until you start emptying your hand
Commanders Plate (SLD Rainbow Foil $32) I want the Marvel version, as the other SLD foil is $50+ and I think this can get there
At the beginning of your upkeep, this creature deals X damage to target opponent previously dealt damage by it, where X is the number of infection counters on it
It only costs four and if you happen to have a few creatures in play, you get to gain some life for your trouble
A Shift ability also means she can come into play a bit early, and eight willpower will make her hard to take out even later