Four cards are banned (Meathook Massacre, Fable of the Mirror-Breaker, Invoke Despair, and Reckoner Bankbuster) but the card designs from the past three years have largely been balanced, fair, and interactive
Shadow's effect isn't once per turn , so you want to only cast spells when you have an artifact to tap for them, so no opponent can interact with it and it'll always resolve
Farewell is a permanent removal spell, sending them all to exile for the rest of the game (for the most part), making it a powerful answer to many of Commanders strongest cards
The most recent one was Goddric, Cloaked Reveler in April, 2025, and Avacyn's Pilgrim as a MagicFest 2025 attendance promo in February of the same year
Harbinger of the Tides Rarity: Rare TYPE: Creature SUBTYPE: Merfolk Wizard CMC: 2 Mana cost: USD: $0.14 EUR: 0.22 TIX: 0.02 EDHREC RANK: 11323 (2/2) You may cast this spell as though it had flash if you pay more to cast it