Haunted Crossroads Combos
Etali, Primal Conqueror // Etali, Primal Sickness + Haunted Crossroads + Phyrexian Altar
Combo result
Infinite ETB. Infinite LTB. Infinite death triggers. Infinite sacrifice triggers. Infinite storm count. Exile each opponent's library. Cast all nonland cards from each opponent's library. Near-infinite magecraft triggers.
Prerequisites
Etali in hand. All other permanents on the battlefield. {R}{R} available.