(8/25/2017) Any continuous effects with a "for as long as" duration such as that of Mathas, Fiend Seeker ignore phased-out objects
From the data, we can see that the demand is genuine there
You could also counter both the copy and the original with counterspells like Double Negative, Summary Dismissal, and Whirlwind Denial
Legendary Planeswalker - Bolas Color tag templates(None) Niv-Mizzet, Parun This spell can't be countered
A cycle of curses note in Commander 2017 all have the same mechanic the curser and the opponent attacking the cursed player benefit from their misfortune and the same artistic theme, revolving around one very unlucky fellow note front and center while he's putting his hands up trying to talk down a Torches and Pitchforks mob White , sitting at a table with a drink in hand obliviously blathering while everyone in the shot is taking note of his every careless word Blue , running from the outstretched claws of zombies Black , watching with shock as gold bursts from his pockets to random people on the street Red , and nervously looking around while a bunch of wolves attracted by his fresh-cooked meal bear down on him Green
A free mill for seven is great however at the cost of having a dead card when you don't get it in your opener you have to be chock full of card filter or utterly desperate to run this