It lets you place an additional card from your hand into your inkwell face down and draw one card, making it perfect for quickly stacking resources to summon heavy hitters
You can't flip them in Shiko decks, if you are making token copies of them, but I think getting their ETB abilities when they come into play is enough value
There is an Amethyst/Steel deck with cards focused on Jafar and Iago from Aladdin , as well as a Ruby/Sapphire deck starring Belle and the Beast
Below you will find a breakdown of every possible rarity and its pull rates: Set-by-Set Comparison: How the Odds Evolved The Classic Era (Sets 14) Sets: The First Chapter, Rise of the Floodborn, Into the Inklands, Ursulas Return

Judson 153 $0.13 Nick Wilde 154 $0.19 Noi 155 $0.05 Owl 156 $0.16 Prince Charming 157 $0.07 Rabbit 158 $0.97 Sisu 159 $0.04 The Nokk 160 $0.22 Winnie the Pooh 161 $0.17 Falling Down the Rabbit Hole 162 $0.06 Four Dozen Eggs 163 $0.04 Launch 164 $0.08 Nothing to Hide 165 $0.03 Fang Crossbow 166 $0.05 Gumbo Pot 167 $0.30 Maurice's Workshop 168 $0.18 Pawpsicle 169 $0.07 Sardine Can 170 $0.10 Beast 171 $0.21 Beast 172 $7.73 Beast 173 $0.05 Benja 174 $0.18 Chief Bogo 175 $0.06 Cinderella 176 $0.59 Cinderella 177 $0.13 Donald Duck 178 $0.03 Eli La Bouff 179 $0.24 Goofy 180 $0.28 Hercules 181 $0.07 Hercules 182 $0.13 Jafar 183 $0.10 Jafar 184 $0.12 Kronk 185 $0.08 Lawrence 186 $0.08 Li Shang 187 $0.09 Magic Broom 188 $0.71 Namaari 189 $0.05 Pacha 190 $0.03 Prince Naveen 191 $0.18 Queen of Hearts 192 $0.16 Robin Hood 193 $0.10 The Huntsman 194 $0.08 The Prince 195 $0.18 Tiana 196 $0.05 Tiana 197 $0.04 Charge