Since Esper excels at controlling the game through counterspells, spot removal, and board wipes, cards that do this are obvious additions to these decks
Alharu, Solemn Ritualist Amarant Coral Azusa, Lost but Seeking Azusa, Lost but Seeking Dosan the Falling Leaf Elsha of the Infinite Elsha, Threefold Master Erayo, Soratami Ascendant Guru Pathik Homura, Human Ascendant Ishai, Ojutai Dragonspeaker Ishai, Ojutai Dragonspeaker Iwamori of the Open Fist Kuon, Ogre Ascendant Lyse Hext Monk Gyatso Narset, Enlightened Exile Narset, Enlightened Master Narset, Jeskai Waymaster Oji, the Exquisite Blade Rasaad yn Bashir Rune-Tail, Kitsune Ascendant Sabin, Master Monk Sasaya, Orochi Ascendant Seshiro the Anointed Shu Yun, the Silent Tempest Siani, Eye of the Storm Snow Villiers Stick, Fearless Mentor Taigam, Master Opportunist Taigam, Ojutai Master Tifa Lockhart Tifa, Martial Artist Zedruu the Greathearted Zell Dincht
Drawing a card each time one of your creatures dies is almost worth the price of admission alone, but when combined with her -4 double Edict effect it creates a devastating table-wide tempo swing
Bloomvine Regent Bloomvine Regent is so simple at what it does that it risks being an auto-include, at least in green EDH decks
Every color has access to fantastic budget options to keep your hand full
