Alpine Moon Anim Pakal, Thousandth Moon Arlinn, Embraced by the Moon Arlinn, the Moon's Fury Bad Moon Benediction of Moons Blood Moon Bound by Moonsilver Brinelin, the Moon Kraken Call of the Full Moon Chaos Moon Circle of the Moon Druid Cult of the Waxing Moon Day of the Moon Eztli of the Thousand Moons Full Moon's Rise Hallowed Moonlight Honeymoon Hearse Howling Moon Ichormoon Gauntlet Imprisoned in the Moon Kami of the Crescent Moon Kami of the Waning Moon Lace with Moonglove Magus of the Moon Mistmoon Griffin Moon Girl and Devil Dinosaur Moon Heron Moon Sprite Moon-Blessed Cleric Moon-Boy, Dino Rider Moon-Circuit Hacker Moon-Eating Dog Moon-Vigil Adherents Moonblade Shinobi Moonbow Illusionist Moonfolk Puzzlemaker Moonglove Changeling Moonglove Extract Moonglove Extractor Moonglove Winnower Moonhold Moonlace Moonlight Bargain Moonlight Geist Moonlight Hunt Moonlit Ambusher Moonlit Lamenter Moonlit Meditation Moonlit Scavengers Moonlit Strider Moonlit Wake Moonmist Moonrage Brute Moonrager's Slash Moonring Island Moonring Mirror Moonrise Cleric Moonrise Intruder Moonscarred Werewolf Moonshadow Moonshae Pixie Moonshae Pixie Moonshaker Cavalry Moonsilver Key Moonsilver Spear Moonsnare Prototype Moonsnare Specialist Moonstone Eulogist Moonstone Harbinger Moonstone, Harsh Mistress Moonveil Dragon

A toughness of one is about the same as Glass Joe's chin from Punch Out, while a toughness of six is pretty much like Rocky, though toughness can actually soar into the stratosphere
We don't really have any consistent milling cards in Standard at the moment though, your best bet would probably be to try something with the Durant from Battle Styles which discards cards up to the amount of Durant you have in play
If there is a Stax card that's as close to our rule about not preventing them from doing anything at all, this would be it