Krark, the Thumbless Combos
Rograkh, Son of Rohgahh + Krark, the Thumbless + Skyfire Phoenix
Combo result
Infinite ETB. Infinite LTB. Infinite death triggers. Infinite sacrifice triggers. Infinite storm count.
Prerequisites
Rograkh in hand or in the command zone. All other permanents on the battlefield. Rograkh and Krark are your commanders. You have enough mana to pay for Rograkh's commander tax, if applicable.