not so great

Warrior" 0x10E0,"Horn of the Unicorn" 0x10E0,"Horn of the Unicorn" 0x10E0,"Horn of the Unicorn" 0x10E7,"Malevolent Nuzzler" 0x10EA,"Invigoration" 0x10EA,"Invigoration" 0x10EA,"Invigoration" 0x1106,"Kanan the Swordmistress" 0x1106,"Kanan the Swordmistress" 0x119B,"Man-Eater Bug" 0x1231,"Kunai with Chain" 0x1231,"Kunai with Chain" 0x124F,"House of Adhesive Tape" 0x1291,"Gazelle the King of Mythical Beasts" 0x12CF,"Graceful Dice" 0x12CF,"Graceful Dice" 0x12E4,"Trap Hole" 0x12EB,"De-Spell" 0x12EB,"De-Spell" 0x12F3,"Ultimate Offering" 0x12F3,"Ultimate Offering" 0x12F8,"Tribute to The Doomed" 0x12F8,"Tribute to The Doomed" 0x12F8,"Tribute to The Doomed" 0x12FE,"Magic Jammer" 0x1319,"Share the Pain" 0x131B,"Heavy Storm" 0x132D,"Mystical Space Typhoon" 0x132E,"Giant Trunade" 0x1333,"Giant Rat" 0x1333,"Giant Rat" 0x139B,"The Illusory Gentleman" Side Deck (0): Fusion Deck (0): You should be able to copy/paste that into a text file on your PC and import it into your YuGiOh .SAV file with my tool.

It is still strong enough to make it necessary to restrict it, but many other cards would need to be banned before Imperial Order ever returned to the forbidden list
Ross Merriam picked Selesnya to be the best guild in Guilds of Ravnica before anyone else due to the power of Flower, and after playing with the card over the last week, Id have to agree with him
The same principle applies if you cast Fractured Realm, except that it would be a 7-mana spell and permanent