Combo result
Infinite ETB. Infinite LTB. Infinite mill. Prerequisites
Altar of the Brood and Detention Sphere on the battlefield. A nonland permanent exiled by Detention Sphere.
Sakashima the Impostor + Opalescence + Detention Sphere
Combo result
Infinite ETB. Infinite LTB. Prerequisites
Opalescence and Detention Sphere on the battlefield. Sakashima the Impostor in hand.
Sakashima the Impostor + Starfield of Nyx + Detention Sphere
Combo result
Infinite ETB. Infinite LTB. Prerequisites
Starfield of Nyx and Detention Sphere on the battlefield. Sakashima the Impostor in hand. 4 other enchantments on the battlefield under your control to activate Starfield of Nyx.