Tasha’s Hideous Laughter is interesting. It is certainly strong when you consider that against some decks with really low curves or a very high land count you might end up exiling 1/3rd of your opponent’s deck, but I’m not sure what constructed mill decks would want this. Standard rogues doesn’t really want to use this because their cards care about the opponent’s graveyard being full and a big part of what makes Modern Mill decks tick is the card advantage from visions of beyond and disruption in the form of sugical extraction and drown in the loch.
At first glance you’d think this would at least gives Modern Mill a mill spell that doesn’t care about sideboard shuffle-in eldrazi, but even then sidboarding in Emrakul, the aeons torn is still not bad vs Tasha’s Hideous Laughter since Emrakul adds a 15 mana value hit, possibly making this into a 3 mana tome scour that exiles rather than a card that can “mill” more cards than archive trap.
This might be good against rogues due to the generally know mana curve (aside from its big draw spell).
Vow of Unity and Scholarship Sponsor are pretty good Cunning Rhetoric is interesting tech. Fain the not planeswalker. These cards I like a bunch they are giving, but still keeping you safe. Inkshield the super fog also Tempting Contract.
This might be good against rogues due to the generally know mana curve (aside from its big draw spell).