Declare the creature with Breath of Fury attached and Maestros Diabolist as attackers.
Maestros Diabolist triggers, creating a creature token.
Deal combat damage using the creature that has Breath of Fury attached. 
Breath of Fury triggers, causing you to sacrifice the creature it is attached to, then attach Breath of Fury to the creature token, then causing you to untap all creatures you control and to get an additional combat phase after this one.
If the sacrificed creature was a Devil token, it triggers when it dies, dealing 1 damage to any target.
Repeat each combat phase.

Infinite ETB

Infinite LTB

Infinite combat damage

Infinite combat phases

Infinite damage

Infinite death triggers

Infinite mana creatures you control can produce

Infinite sacrifice triggers

Infinite untap of creatures you control

Breath of Fury

Rising of the Day

Maestros Diabolist

Declare The Incredible Hulk and Maestros Diabolist as attackers.
Maestros Diabolist triggers, creating a creature token.
When the creature token enters, Blasting Station triggers, untapping Blasting Station.
Holding priority, activate Blasting Station by tapping it and sacrificing the creature token.
When the token dies, it triggers, dealing 1 damage to any target.
Resolve the Blasting Station ability, dealing 1 damage to The Incredible Hulk.
The Incredible Hulk triggers, putting a +1/+1 counter on it, then untapping it and causing you to get an additional combat phase after this one.
Repeat each combat phase.

Bruce Banner // The Incredible Hulk

Blasting Station

Declare The Incredible Hulk and Maestros Diabolist as attackers.
Maestros Diabolist triggers, creating a 1/1 Devil creature token.
Holding priority, activate Phantom Train by sacrificing the Devil.
When the Devil dies, it triggers, dealing 1 damage to The Incredible Hulk.
The Incredible Hulk triggers, putting a +1/+1 counter on it, then untapping it and causing you to get an additional combat phase after this one.
Resolve the Phantom Train ability.
Repeat each combat phase.

Infinite +1/+1 counters on a creature

Phantom Train

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