Moira Brown, Guide Author Of all the quest counter commanders, Moira Brown, Guide Author looks the strongest because it provides a quest counter build-around rather than hoarding the achievements for itself
Once Aurelias Vindicator leaves the battlefield, you get to bring them all back to their owners hand, refilling your hand potentially, or clearing the way for a big attack
Your cunning opponent can choose you as a target for your spell using, say, Redirect
Its own bonus counters created from removing counters can be given to one of your other creatures you know, so Sin can inherit them twice over when it returns
Surge gives hexproof from anything, not just red and black spells
Creature - Horror Zombie Alien The Master, Gallifrey's End Make Them Pay Whenever a nontoken artifact creature you control dies, you may exile it