mtg blue hate cards Unfathomable Truths [Modern Horizons 3] Reign of Chaos — Mirage

Would you Terror the Rector knowing full well that it could spell instant Light of Day or Circle of Protection: Black

You potentially get an extra EtB from your Commander and you can get a bonus flicker on upkeep

The ability to negate sacrifice effects, such as Dictate of Erebos, is truly a blessing, but it can be a curse if you arent careful Torment of Hailfire will still force you to discard cards or lose life, so watch out

He is also not really reduced in power by being a legend as so many of the more costly ones are as he is not so important to keep in play for the investment as others and gets you value when cast for against Karakas abuse

Still, since it's 5 mana, I don't really want to cast it hoping for that