Below is a matrix of outcomes in each scenario: A player's decision in this situation is likely affected by multiple other factors, including the other cards in play, their hand, their deck, and creature abilities
Dragon Shield Sleeves Let's start with the good news
Storvald, Frost Giant Jarl, Rubinia Soulsinger, and maybe Falco Spara, Pactweaver or Katilda and Lier (mostly because of Lier) are the best options for an Archenemy villain
Meanwhile, in Pioneer, Talent is commonly found in Izzet Phoenix decks
Not Legal Formats Alchemy, Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pauper, Pioneer, Standard, Timeless, Vintage Rulings (1/19/2018) A full list of cards that have been banned and/or restricted in a Constructed format as of the release of Unstable can be found here:
Two in particular stand out, the Skyline Despot and the Thunderbreak Regent