My expert pixel artist has already designed the base template for the Charms cards.  Eventually there will be five tiers of rarity with corresponding designs for each: 🚩Common (I), ✔️Rare (II), 🔮Epic (III), ⚡Legendary (IV), and 🌈Artifact / Unique (V).  
  
Cards will be 400x560 coated in a delicious retro theme, with enough space for pixel art of the magical item plus flavor text. This is a prototype of the template for what will likely be the 'rare' tier.  
  
http://i.imgur.com/qYb4DPx.png