Rith, the Awakener + Breath of Fury + Utopia Mycon + Urabrask the Hidden
Rith, the Awakener
Breath of Fury
Utopia Mycon
Urabrask the Hidden
Infinite colored manaInfinite combat damageInfinite combat phasesInfinite death triggersInfinite creature ETBInfinite creature LTBInfinite mana creatures you control can produceInfinite creature sacrifice triggersInfinite untap of creatures you controlInfinite creature tokens with haste
How it works
Deal combat damage using Rith and the creature with Breath of Fury attached, triggering Rith and Breath of Fury.
Resolve the Rith trigger, causing you to pay 2 to create at least four 1/1 Saproling creature tokens.
Resolve the Breath of Fury trigger, causing you to sacrifice the creature it is attached to, then attach Breath of Fury to a Saproling token, then causing you to untap all creatures you control and to get an additional combat phase after this one.
Move to your next combat phase, and deal combat damage using Rith and the creature with Breath of Fury attached, triggering Rith and Breath of Fury.
Holding priority, activate Utopia Mycon's second ability three times by sacrificing three Saprolings, adding 2.
Repeat from step 2.
This brilliant assault loops infinite combat phases by recycling Breath of Fury onto a fresh attacker each turn. Rith, the Awakener fuels the engine by turning combat damage into an army of Saproling tokens, which are quickly sacrificed to Utopia Mycon to generate the exact green mana needed to pay Rith's damage trigger fee. Meanwhile, Urabrask the Hidden ensures that your newly created Saprolings can immediately join the fight with haste, keeping the chain of extra combats unbroken.