Custodi Lich Creatures that grant either monarch or the initiative are great additions for Magic formats that have access to them outside of Commander
Whenever you attack, for each opponent, create a 1/1 white Human creature token that's tapped and attacking that player or a planeswalker they control
Fractal Harness Fractal Harness works better than Sword of Hours for counter-doubling purposes even if it's more expensive
Even if the opponent has Leyline of the Void or Rest in Peace that you dont have another answer for, Oko can turn your one- and zero-power creatures into 3/3s, giving your backdoor plan of attacking with horrible creatures some real teeth, especially against an opponent who maybe took too many mulligans to find a hate card
Though spells and abilities that are exiled won't get a chance to resolve, they don't count as being "countered." If Sundial of the Infinite's ability is activated before the end step, any "at the beginning of the end step"-triggered abilities won't get the chance to trigger that turn because the end step is skipped
Therefore, we'll be keeping an eye on white, blue, and green allies with good effects such as Sea Gate Loremaster, Kabira Evangel, and Talus Paladin