White and black have some of the best ways to trigger Minthara's effect, either by blinking creatures with Ephemerates or sacrificing them with a Carrion Feeder
Return a permanent to its owner's hand This is another area where blue is king
Whenever one or more +1/+1 counters are put on Emperor of Bones, put a creature card exiled with Emperor of Bones onto the battlefield under your control with a finality counter on it
Throw him into a Zacama, Primal CalamityZacama, Primal Calamity, Gishath, Sun's AvatarGishath, Sun's Avatar, or even the brand new Pantlaza, Sun-FavoredPantlaza, Sun-Favored, and hell play a support role of handing out counters like an usher at a theatre show
Each of those players may choose new targets for his or her copy
Abilities like raid abilities have been triggered even if the attacking creature(s) leave the battlefield