(You can still play a companion if you had it in your hand, as you would any other creature)
Take a hike, player hexproof
Set: Commander 2019 Illustrated by: Min Yum Source: Angel of Sanctions Creature Angel 3 / 3 Flying Set: Oath of the Gatewatch Illustrated by: Anastasia Ovchinnikova Source: Linvala, the Preserver Creature Angel 4 / 4 Flying Set: Commander 2018 Illustrated by: Magali Villeneuve Sources: Angelic Accord, Angelic Favor, Decree of Justice, Descend upon the Sinful, Devout Invocation, Empyrial Storm, Entreat the Angels, Geist of Saint Traft, Invocation of Saint Traft, Luminarch Ascension
Careful Study 2.0 is obviously one of the best cards in Modern, but that's more a product of what it enables rather than the power level of the card itself
(7/23/2021) During your turn, you can look at the top card of the chosen opponent's library whenever you want (with one restriction
The card costs three ink to play (it can also be added to your inkwell), has three strength and three willpower, and will gain you two lore when it quests