This is an infinite combo piece used for bouncing permanents with enter the battlefield effects
Beguiler of Wills Binding Grasp Blue Sun's Twilight Callous Oppressor Chamber of Manipulation Control Magic Cytoplast Manipulator Dominate Entrancing Melody Eriette's Tempting Apple Evangelize Exert Influence Flayer of Loyalties Glen Elendra Helm of Possession Keiga, the Tide Star Legacy's Allure Lullmage's Domination Mind Flayer Mouth to Mouth Neural Network Old Man of the Sea Phone a Friend Possession Engine Preacher Riptide Entrancer Roil Elemental Rootwater Matriarch Rubinia Soulsinger Seasinger Simic Manipulator Siren of the Fanged Coast Sower of Temptation Squidnapper (playtest) Thalakos Deceiver Vedalken Shackles Vodalian Mindsinger Welcome to the Fold What's Yours Is Now Mine Yasova Dragonclaw Your Will Is Not Your Own
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Im not sure I agree, and partly thats due to the social contract
When Atarkas not killing players with commander damage, its usually doing a good job of giving your other dragons double strike, which means it even has an impact on combat the turn it comes into play
A new variant of this ability, emerge from artifact, appears in this set