Loki

Ward - Exile a card from your hand at random. At the beginning of your upkeep, scry 1. If a nonland card is on top of your library you may reveal it and draw a card. When this creature enters the battlefield or deals combat damage to a player, each opponent reveals their hand and you chose a card from each opponent’s hand to be discarded into exile. You may cast spells exiled with The Immortal Charlatan, Loki without paying their mana costs. {U}{B}{R}, {T}: Target player cannot cast spells this turn unless they sacrifice a permanent per spell cast.