Mill is viable in Limited with 40-card decks, balanced for 60-card formats, and still possible in Commander too, you just need to aim for hitting multiple libraries at once and often need a combo to really make it click
EDH decks that go wide with tokens usually play this card, and this modal spell also sees a lot of play in Pauper as a common card
Waters null/null NOT LEGAL Standard NOT LEGAL Future LEGAL Historic LEGAL Timeless LEGAL Gladiator NOT LEGAL Pioneer NOT LEGAL Explorer LEGAL Modern LEGAL Legacy LEGAL Pauper LEGAL Vintage LEGAL Penny LEGAL Commander LEGAL Oathbreaker NOT LEGAL Standardbrawl LEGAL Brawl NOT LEGAL Alchemy LEGAL Pauper Commander LEGAL Duel NOT LEGAL Oldschool NOT LEGAL Premodern LEGAL Predh Exile target creature you control, then return it to the battlefield under its owner's control
The Brothers' War Limited Review - Blue Archtypes and Signpost uncommons Blue/White Soldiers (Yotian Tactician) Blue/Black Draw 2 (Evangel of Synthesis) Blue/Red Non-Creatures Matter (Third Path Iconoclast) Blue/Green Ramp (Battery Bearer) The Brothers' War - Top 3 Blue Commons 1) Wing Commando 2) Weakstones Subjugation 3) Koilos Roc The Brothers' War - Top 3 Blue Uncommons 1) Zephyr Sentinel 2) Thopter Mechanic 3) Defabricate Next in our The Brothers' War limited review it's time to check out Blue
this collection includes 75 cards of rarity Rare or higher and 26 Traditional Foil cards (8 of which are Rare or Mythic Rare), plus you'll find more in the included Play Boosters