The Magic: The Gathering Drizzt card and the other two additions are pretty sweet
The algorithm actually works by alerting you when the prices of similar cards increase or drop so that you can adjust accordingly
It takes very little to obtain the citys blessing, especially considering all the mana rocks running around the format, and EDHs structure encourages playing large spells like Massacre Wurm and Breach the Multiverse that this spell benefits from
Gallery and List of Coven Cards Ambitious Farmhand / Seasoned Cathar Augur of Autumn Candlegrove Witch Candlelit Cavalry Candletrap Contortionist Troupe Dawnhart Mentor Dawnhart Wardens Duelcraft Trainer Duel for Dominance Harvesttide Sentry Leinore, Autumn Sovereign Might of the Old Ways Redemption Choir Ritual Guardian Ritual of Hope Sigarda, Champion of Light Stalwart Pathlighter Sungold Sentinel Wall of Mourning Best Coven Cards Augur of Autumn One of Magic's best humans, Augur of Autumn is the most popular coven card in Commander, usually with Azusa, Lost but Seeking, Zimone, Mystery Unraveler or Edge of Eternities Hearthhull, the Worldseed in the command zone
Take, as a very good counter-example, Yuriko, the Tiger's Shadow