Otherworldly Gaze If you count Surveil spells as self-mill (and I do, given how rarely you see triggers that care exactly how cards end up getting from your library to the graveyard), then Otherworldly Gaze is as good a choice as any for the most consistent, efficient, no-bells-and-whistles version of the effect
We can enjoy putting it on a creature with landwalk ability, like Sheoldred, Whispering One, or simply trample so that we know well get that hit
And since this special summon is not an Xyz summon, it is subject to the revival restriction, so unlike the original, it cannot be revived, and even if you ignore that and forcibly revive it, it will be a normal monster with no effect at all, and it will only be a sandbag with 0 attack/defense, and while the original, Dreamy God, can use the field clean effect, it is very unfortunate that this one has lost its effect destruction resistance
My favorite part of the process is working with artists and providing them with guidance on how to achieve our visual goals for each card
[/spoiler] [spoiler=Prinsychic Paladin] While "Prinsychic Shrine" is face-up on your side of the field, you can tribute summon this card with only 1 tribute