Its a very aggressive mechanic, but can be problematic if it shows up too heavily in any one set
This philosophy undergirds recent small sets like Spider-Man and Teenage Mutant Ninja Turtles , but its also evident in big premier sets like Lorwyn Eclipsed
A Good Thing (playtest) Abstruse Appropriation Anguished Unmaking Ashen Rider Athreos, Shroud-Veiled Ayli, Eternal Pilgrim Beckon Apparition Blind Hunter Can't Stay Away Castigate Cloak and Dagger, Entwined Conciliator's Duelist Consecrate // Consume Consecrate // Consume Despark Dire Tactics Ethereal Absolution Evershrike General Kudro of Drannith General's Enforcer Ghost Council of Orzhova Hide // Seek Identity Crisis Invasion of New Capenna Invasion of Tolvada Jirina, Dauntless General Karlov of the Ghost Council Kaya the Inexorable Kaya's Guile Kaya, Bane of the Dead Kaya, Geist Hunter Kaya, Ghost Assassin Kaya, Ghost Haunter (playtest) Kaya, Intangible Slayer Kaya, Orzhov Usurper Kaya, Spirits' Justice Ketramose, the New Dawn Legions to Ashes Liesa, Forgotten Archangel Merciless Eviction Moira and Teshar Necromancer's Covenant Nita, Forum Conciliator Obzedat, Ghost Council Ondu Knotmaster Ondu Knotmaster Orzhov Pontiff Priest of Fell Rites Profane Procession Purgatory Qoneus, Horizon Splicer Rise of Extus Rite of Oblivion Rite of the Moth Sandbender Scavengers Silverquill Charm Sin Collector Soul Search Spirit-Sister's Call Syr Vondam, Sunstar Exemplar Teysa, Orzhov Scion The Kenriths' Royal Funeral The Spot, Living Portal Tidehollow Sculler Triad of Fates Unmake Utter End Vanishing Verse Vizkopa Confessor Winter Soldier, Icy Assassin
Blink the summons right before they go away, and you have a nice engine going on, besides all the crazy stuff that you can do with Agent of Treachery or Atraxa, Praetors' Voice
We also ensured that Sir Terence made an appearance in the art
