Starting with the good, aside from two cards were going to get into later on, Kaldheim is a pretty well-balanced set
The functionality of removing a planeswalker or something like Erebos, God of the Dead, which would otherwise completely kold you, is always welcome to have access to
Because of this, Birthing Pod is a fairly unsafe card to have floating around in Modern
Legendary Creature - Human Pirate Ramp (CTRL to add secondary) Recursion Rakshasa Debaser Whenever this creature attacks, put target creature card from defending player's graveyard onto the battlefield under your control

Julius Jumblemorph Feisty Spikeling Fire-Belly Changeling Flock Impostor Game-Trail Changeling Gangly Stompling Ghostly Changeling Gladewalker Ritualist Graveshifter Guardian Gladewalker Impostor of the Sixth Pride Irregular Cohort Littjara Glade-Warden Littjara Kinseekers Masked Vandal Mirror Entity Mischievous Sneakling Mistform Ultimus Mistwalker Moonglove Changeling Moritte of the Frost Morophon, the Boundless Mothdust Changeling Mutable Explorer Omni-Changeling Omo, Queen of Vesuva Prideful Feastling Realmwalker Rooftop Percher Shapesharer Sizzling Changeling Skeletal Changeling Taurean Mauler Three Tree Mascot Turtleshell Changeling Universal Automaton Unsettled Mariner Valiant Changeling Venomous Changeling War-Spike Changeling Webweaver Changeling Woodland Changeling
The biggest winners both come from the new Jund-like Death's Shadow deck