After the subgame ends, each player shuffles their cards from the subgame to re-form their main-game library (and Attraction deck, if applicable), and they return to the main game from the point they left off, with Tug of War finishing resolving and the winner of the subgame getting their reward
#MTGStrixhaven
Aesi, Tyrant of Gyre Strait, Fathom Mage, Mulldrifter, Nezahal, Primal Tide, Sphinx of Uthuun, Compulsive Research, Fact or Fiction, Harmonize, Urban Evolution, Seer's Sundial, Ior Ruin Expedition 11 card draw
Callous Oppressor made attacking and blocking nearly impossible for an opponent if they didn't name wisely when it came into play
Choose your opening hand and mulligans carefully if you know what ink colors or deck youre playing against