You need the City's Blessing, and for the creature to stick around on your board dodging removal for a whole turn before you use its ability, and after you do so, the Navigator jumps to the bottom of your library, never to be seen again
Fiend Hunter and Leonin Relic-Warder are amazing with them, as if you return them to hand with their ETB triggers on the stack, the permanent theyre removing will be exiled permanently
(4/12/2024) A player whose hand and/or graveyard contain no cards can still choose to shuffle their hand and graveyard into their library
If the returned creature can't attack for any reason (such as being tapped or having come under your control that turn), then it doesn't attack
Krenko, Mob Boss Embrace the goblin horde Finally, weve got a goblin commander
Then you can spend Azorius mana to make a dork you control assign combat damage with its toughness