The main sets of Magic are categorized as either being a Core Set, something that Magic hasn't done in a while but are intended to be a bit more 'evergreen' in flavor and mechanics, and Expansions, which are more focused on an event or plane, and tend to have more specific mechanics and themes
Beyond Zinnia, there are some impressive cards in the 99 like Jacked Rabbit and Rapid Augmenter that only further the madness that is your battlefield
Out: Be'lakor, the Dark MasterBe'lakor, the Dark Master, Heralds of TzeentchHeralds of Tzeentch, Lord of ChangeLord of Change, Knight RampagerKnight Rampager, Magnus the RedMagnus the Red, Let the Galaxy BurnLet the Galaxy Burn, Decree of PainDecree of Pain, Nurgle's RotNurgle's Rot, Dark RitualDark Ritual, VenomcrawlerVenomcrawler, ReverberateReverberate, The Horus HeresyThe Horus Heresy, Bile BlightBile Blight, Kharn the BetrayerKharn the Betrayer No Price Too Steep for Chaos So lets say you wanted to invest in some high dollar cards to make your deck just a bit stronger
Vorinclex takes 6 damage, which is exactly his toughness
If youre a fan of mill, Maddening Cacophy likely checks all the boxes
You can earn plenty of cards from the most recent sets like Murders at Karlov Manor and Outlaws of Thunder Junction, just through play