No backlash against your own creatures for playing it, no chance of your opponent playing most Clone effects to copy your game plan, and a solid way to restrict the creatures any deck using blue can even put into play

Judson 153 $0.12 Nick Wilde 154 $0.19 Noi 155 $0.05 Owl 156 $0.17 Prince Charming 157 $0.06 Rabbit 158 $1.02 Sisu 159 $0.04 The Nokk 160 $0.20 Winnie the Pooh 161 $0.16 Falling Down the Rabbit Hole 162 $0.05 Four Dozen Eggs 163 $0.04 Launch 164 $0.07 Nothing to Hide 165 $0.04 Fang Crossbow 166 $0.06 Gumbo Pot 167 $0.30 Maurice's Workshop 168 $0.21 Pawpsicle 169 $0.07 Sardine Can 170 $0.10 Beast 171 $0.25 Beast 172 $7.80 Beast 173 $0.05 Benja 174 $0.18 Chief Bogo 175 $0.07 Cinderella 176 $0.66 Cinderella 177 $0.14 Donald Duck 178 $0.03 Eli La Bouff 179 $0.22 Goofy 180 $0.27 Hercules 181 $0.07 Hercules 182 $0.13 Jafar 183 $0.10 Jafar 184 $0.11 Kronk 185 $0.08 Lawrence 186 $0.08 Li Shang 187 $0.09 Magic Broom 188 $0.80 Namaari 189 $0.05 Pacha 190 $0.03 Prince Naveen 191 $0.18 Queen of Hearts 192 $0.17 Robin Hood 193 $0.13 The Huntsman 194 $0.08 The Prince 195 $0.18 Tiana 196 $0.07 Tiana 197 $0.04 Charge

FCA cards are legal in Commander, Legacy, and Vintage, and each card is also legal in any other format where its already legal (e.g., Lightning Bolt is Modern-legal)
Thrasios, Triton Hero FINAL FANTASY: Through the Ages, Mythic Limited: 3.5 I love a two-drop that threatens to run away with the game, and Tidus, Zanarkand Fayth (Thrasios, Triton Hero) certainly fits that description
Possibly better, if you have ways of making tokens during your opponents turns