If the target of Fear of Lost Teeth's ability is an illegal target as the ability tries to resolve, it won't resolve and none of its effects will happen
In Commander, however, five-color cards are in a league of their own
So, whether you are here to mill, counter, draw, clone, cheat, tap, untap, or simply tell your opponents "no" over and over again, Mono-Blue has plenty of Commanders worth sleeving up
I haven't even begun to think about the best possible cards or effects to take advantage of this, but I know a ton of people will try to break this card in half
At two mana it's an over-costed Doomed Traveler, at four mana it's a Pia and Kiran Nalaar which doesn't give you tokens until it dies, and at six mana it's a too-expensive Siege-Gang Commander that triggers on death instead of entering the battlefield
So let's get down to business and secure the victory